100648820 has 24 divisors (see below), whose sum is σ = 212319744. Its totient is φ = 40077216.

The previous prime is 100648817. The next prime is 100648901. The reversal of 100648820 is 28846001.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6824 + ... + 15743.

It is an arithmetic number, because the mean of its divisors is an integer number (8846656).

Almost surely, 2^100648820 is an apocalyptic number.

100648820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100648820 is an abundant number, since it is smaller than the sum of its proper divisors (111670924).

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

100648820 is a wasteful number, since it uses less digits than its factorization.

100648820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22799 (or 22797 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 29.

The square root of 100648820 is about 10032.3885490944. The cubic root of 100648820 is about 465.1605719784.

The spelling of 100648820 in words is "one hundred million, six hundred forty-eight thousand, eight hundred twenty".