100494128 has 20 divisors (see below), whose sum is σ = 222522960. Its totient is φ = 43068864.

The previous prime is 100494103. The next prime is 100494133. The reversal of 100494128 is 821494001.

It is a self number, because there is not a number n which added to its sum of digits gives 100494128.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 448523 + ... + 448746.

It is an arithmetic number, because the mean of its divisors is an integer number (11126148).

Almost surely, 2^100494128 is an apocalyptic number.

It is an amenable number.

100494128 is an abundant number, since it is smaller than the sum of its proper divisors (122028832).

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

100494128 is an equidigital number, since it uses as much as digits as its factorization.

100494128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 897284 (or 897278 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 29.

The square root of 100494128 is about 10024.6759548626. The cubic root of 100494128 is about 464.9221405848.

The spelling of 100494128 in words is "one hundred million, four hundred ninety-four thousand, one hundred twenty-eight".