100485820 has 24 divisors (see below), whose sum is σ = 211302000. Its totient is φ = 40140672.

The previous prime is 100485817. The next prime is 100485907. The reversal of 100485820 is 28584001.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14256 + ... + 20104.

It is an arithmetic number, because the mean of its divisors is an integer number (8804250).

Almost surely, 2^100485820 is an apocalyptic number.

100485820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100485820 is an abundant number, since it is smaller than the sum of its proper divisors (110816180).

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

100485820 is a wasteful number, since it uses less digits than its factorization.

100485820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6717 (or 6715 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 28.

The square root of 100485820 is about 10024.2615688139. The cubic root of 100485820 is about 464.9093282953.

The spelling of 100485820 in words is "one hundred million, four hundred eighty-five thousand, eight hundred twenty".