120891808 has 48 divisors (see below), whose sum is σ = 242694144. Its totient is φ = 59270400.

The previous prime is 120891803. The next prime is 120891833. The reversal of 120891808 is 808198021.

It is a super-2 number, since 2×120891808² = 29229658483017728, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (120891803) 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, 613566 + ... + 613762.

It is an arithmetic number, because the mean of its divisors is an integer number (5056128).

Almost surely, 2^120891808 is an apocalyptic number.

It is an amenable number.

120891808 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

120891808 is a wasteful number, since it uses less digits than its factorization.

120891808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 485 (or 477 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 37.

The square root of 120891808 is about 10995.0810820112. The cubic root of 120891808 is about 494.4612824333.

The spelling of 120891808 in words is "one hundred twenty million, eight hundred ninety-one thousand, eight hundred eight".