100615428 has 36 divisors (see below), whose sum is σ = 256175920. Its totient is φ = 33295536.

The previous prime is 100615381. The next prime is 100615433. The reversal of 100615428 is 824516001.

100615428 is a `hidden beast` number, since 1 + 0 + 0 + 615 + 42 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5050 + ... + 15057.

Almost surely, 2^100615428 is an apocalyptic number.

100615428 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

100615428 is an abundant number, since it is smaller than the sum of its proper divisors (155560492).

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

100615428 is a wasteful number, since it uses less digits than its factorization.

100615428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20256 (or 20251 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 100615428 is about 10030.7242011731. The cubic root of 100615428 is about 465.1091245798.

The spelling of 100615428 in words is "one hundred million, six hundred fifteen thousand, four hundred twenty-eight".