100995720 has 64 divisors (see below), whose sum is σ = 346273920. Its totient is φ = 23084544.

The previous prime is 100995709. The next prime is 100995731. The reversal of 100995720 is 27599001.

It is an interprime number because it is at equal distance from previous prime (100995709) and next prime (100995731).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59277 + ... + 60956.

It is an arithmetic number, because the mean of its divisors is an integer number (5410530).

Almost surely, 2^100995720 is an apocalyptic number.

100995720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100995720 is an abundant number, since it is smaller than the sum of its proper divisors (245278200).

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

100995720 is a wasteful number, since it uses less digits than its factorization.

100995720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120254 (or 120250 counting only the distinct ones).

The product of its (nonzero) digits is 5670, while the sum is 33.

The square root of 100995720 is about 10049.6626809063. The cubic root of 100995720 is about 465.6943724694.

The spelling of 100995720 in words is "one hundred million, nine hundred ninety-five thousand, seven hundred twenty".