100920408 has 16 divisors (see below), whose sum is σ = 252301080. Its totient is φ = 33640128.

The previous prime is 100920403. The next prime is 100920409. The reversal of 100920408 is 804029001.

It is a hoax number, since the sum of its digits (24) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 4205017 = 100920408 / (1 + 0 + 0 + 9 + 2 + 0 + 4 + 0 + 8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100920403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2102485 + ... + 2102532.

Almost surely, 2^100920408 is an apocalyptic number.

It is an amenable number.

100920408 is an abundant number, since it is smaller than the sum of its proper divisors (151380672).

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

100920408 is a wasteful number, since it uses less digits than its factorization.

100920408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4205026 (or 4205022 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 100920408 is about 10045.9149906815. The cubic root of 100920408 is about 465.5785883683.

Adding to 100920408 its reverse (804029001), we get a palindrome (904949409).

The spelling of 100920408 in words is "one hundred million, nine hundred twenty thousand, four hundred eight".