100270920 has 32 divisors (see below), whose sum is σ = 300813120. Its totient is φ = 26738880.

The previous prime is 100270903. The next prime is 100270921. The reversal of 100270920 is 29072001.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (100270921) 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, 417676 + ... + 417915.

It is an arithmetic number, because the mean of its divisors is an integer number (9400410).

Almost surely, 2^100270920 is an apocalyptic number.

100270920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100270920 is an abundant number, since it is smaller than the sum of its proper divisors (200542200).

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

100270920 is a wasteful number, since it uses less digits than its factorization.

100270920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 835605 (or 835601 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 21.

The square root of 100270920 is about 10013.5368377013. The cubic root of 100270920 is about 464.5776718104.

The spelling of 100270920 in words is "one hundred million, two hundred seventy thousand, nine hundred twenty".