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57472000 = 21053449
BaseRepresentation
bin1101101100111…
…1010000000000
311000010212202121
43123033100000
5104203101000
65411454024
71265334565
oct333172000
9130125677
1057472000
112a494623
12172b7314
13bba3401
1478c086c
1550a3b1a
hex36cf400

57472000 has 88 divisors (see below), whose sum is σ = 143699400. Its totient is φ = 22937600.

The previous prime is 57471977. The next prime is 57472001. The reversal of 57472000 is 27475.

It can be written as a sum of positive squares in 4 ways, for example, as 1401856 + 56070144 = 1184^2 + 7488^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57472001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 127776 + ... + 128224.

Almost surely, 257472000 is an apocalyptic number.

57472000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 57472000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71849700).

57472000 is an abundant number, since it is smaller than the sum of its proper divisors (86227400).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

57472000 is an equidigital number, since it uses as much as digits as its factorization.

57472000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 484 (or 456 counting only the distinct ones).

The product of its (nonzero) digits is 1960, while the sum is 25.

The square root of 57472000 is about 7581.0289539086. The cubic root of 57472000 is about 385.9094707471.

Adding to 57472000 its reverse (27475), we get a palindrome (57499475).

The spelling of 57472000 in words is "fifty-seven million, four hundred seventy-two thousand".

Divisors: 1 2 4 5 8 10 16 20 25 32 40 50 64 80 100 125 128 160 200 250 256 320 400 449 500 512 640 800 898 1000 1024 1280 1600 1796 2000 2245 2560 3200 3592 4000 4490 5120 6400 7184 8000 8980 11225 12800 14368 16000 17960 22450 25600 28736 32000 35920 44900 56125 57472 64000 71840 89800 112250 114944 128000 143680 179600 224500 229888 287360 359200 449000 459776 574720 718400 898000 1149440 1436800 1796000 2298880 2873600 3592000 5747200 7184000 11494400 14368000 28736000 57472000