101920808 has 32 divisors (see below), whose sum is σ = 215205120. Its totient is φ = 44832000.

The previous prime is 101920799. The next prime is 101920811. The reversal of 101920808 is 808029101.

It is a super-2 number, since 2×101920808² = 20775702206745728, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15953 + ... + 21408.

It is an arithmetic number, because the mean of its divisors is an integer number (6725160).

Almost surely, 2^101920808 is an apocalyptic number.

It is an amenable number.

101920808 is an abundant number, since it is smaller than the sum of its proper divisors (113284312).

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

101920808 is a wasteful number, since it uses less digits than its factorization.

101920808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37409 (or 37405 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 29.

The square root of 101920808 is about 10095.5835888769. The cubic root of 101920808 is about 467.1119228826. Note that the first 3 decimals are identical.

Adding to 101920808 its reverse (808029101), we get a palindrome (909949909).

The spelling of 101920808 in words is "one hundred one million, nine hundred twenty thousand, eight hundred eight".