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481991952 = 243131395557
BaseRepresentation
bin11100101110101…
…001110100010000
31020120221201122210
4130232221310100
51441342220302
6115454432120
714641602231
oct3456516420
91216851583
10481991952
11228087762
12115502640
1378b1b550
1448029088
152c4ac66c
hex1cba9d10

481991952 has 80 divisors (see below), whose sum is σ = 1350816320. Its totient is φ = 147211776.

The previous prime is 481991929. The next prime is 481991953. The reversal of 481991952 is 259199184.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (481991953) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 83958 + ... + 89514.

It is an arithmetic number, because the mean of its divisors is an integer number (16885204).

Almost surely, 2481991952 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 481991952, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (675408160).

481991952 is an abundant number, since it is smaller than the sum of its proper divisors (868824368).

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

481991952 is a wasteful number, since it uses less digits than its factorization.

481991952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5720 (or 5714 counting only the distinct ones).

The product of its digits is 233280, while the sum is 48.

The square root of 481991952 is about 21954.3151111575. The cubic root of 481991952 is about 784.0551207254.

The spelling of 481991952 in words is "four hundred eighty-one million, nine hundred ninety-one thousand, nine hundred fifty-two".

Divisors: 1 2 3 4 6 8 12 13 16 24 26 39 48 52 78 104 139 156 208 278 312 417 556 624 834 1112 1668 1807 2224 3336 3614 5421 5557 6672 7228 10842 11114 14456 16671 21684 22228 28912 33342 43368 44456 66684 72241 86736 88912 133368 144482 216723 266736 288964 433446 577928 772423 866892 1155856 1544846 1733784 2317269 3089692 3467568 4634538 6179384 9269076 10041499 12358768 18538152 20082998 30124497 37076304 40165996 60248994 80331992 120497988 160663984 240995976 481991952