857900772 has 72 divisors (see below), whose sum is σ = 2199025920. Its totient is φ = 281983680.

The previous prime is 857900753. The next prime is 857900779. The reversal of 857900772 is 277009758.

857900772 is a `hidden beast` number, since 8 + 579 + 0 + 0 + 7 + 72 = 666.

It is a super-3 number, since 3×857900772³ (a number of 28 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (857900779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 865197 + ... + 866187.

Almost surely, 2^857900772 is an apocalyptic number.

It is an amenable number.

857900772 is an abundant number, since it is smaller than the sum of its proper divisors (1341125148).

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

857900772 is a wasteful number, since it uses less digits than its factorization.

857900772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1313 (or 1308 counting only the distinct ones).

The product of its (nonzero) digits is 246960, while the sum is 45.

The square root of 857900772 is about 29289.9431887465. The cubic root of 857900772 is about 950.1941512697.

The spelling of 857900772 in words is "eight hundred fifty-seven million, nine hundred thousand, seven hundred seventy-two".