100255020 has 48 divisors (see below), whose sum is σ = 295491840. Its totient is φ = 25327296.

The previous prime is 100255013. The next prime is 100255021. The reversal of 100255020 is 20552001.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (100255021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42832 + ... + 45111.

It is an arithmetic number, because the mean of its divisors is an integer number (6156080).

Almost surely, 2^100255020 is an apocalyptic number.

100255020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100255020 is an abundant number, since it is smaller than the sum of its proper divisors (195236820).

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

100255020 is a wasteful number, since it uses less digits than its factorization.

100255020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87974 (or 87972 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 15.

The square root of 100255020 is about 10012.7428809493. The cubic root of 100255020 is about 464.5531144231.

The spelling of 100255020 in words is "one hundred million, two hundred fifty-five thousand, twenty".