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126870880 = 2551316053
BaseRepresentation
bin1111000111111…
…10010101100000
322211201201010111
413203332111200
5224434332010
620331141104
73100245643
oct743762540
9284651114
10126870880
1165684a74
12365a4794
1320391436
1412bc7a5a
15b21158a
hex78fe560

126870880 has 48 divisors (see below), whose sum is σ = 302070384. Its totient is φ = 50352640.

The previous prime is 126870871. The next prime is 126870883. The reversal of 126870880 is 88078621.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126870883) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17934 + ... + 23986.

It is an arithmetic number, because the mean of its divisors is an integer number (6293133).

Almost surely, 2126870880 is an apocalyptic number.

126870880 is a gapful number since it is divisible by the number (10) 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 126870880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (151035192).

126870880 is an abundant number, since it is smaller than the sum of its proper divisors (175199504).

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

126870880 is a wasteful number, since it uses less digits than its factorization.

126870880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6199 (or 6191 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 40.

The square root of 126870880 is about 11263.6974391183. The cubic root of 126870880 is about 502.4821639998.

The spelling of 126870880 in words is "one hundred twenty-six million, eight hundred seventy thousand, eight hundred eighty".

Divisors: 1 2 4 5 8 10 16 20 32 40 80 131 160 262 524 655 1048 1310 2096 2620 4192 5240 6053 10480 12106 20960 24212 30265 48424 60530 96848 121060 193696 242120 484240 792943 968480 1585886 3171772 3964715 6343544 7929430 12687088 15858860 25374176 31717720 63435440 126870880