100271428 has 18 divisors (see below), whose sum is σ = 176659854. Its totient is φ = 49798944.

The previous prime is 100271411. The next prime is 100271449. The reversal of 100271428 is 824172001.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 54140164 + 46131264 = 7358^2 + 6792^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 320200 + ... + 320512.

Almost surely, 2^100271428 is an apocalyptic number.

It is an amenable number.

100271428 is a deficient number, since it is larger than the sum of its proper divisors (76388426).

100271428 is an equidigital number, since it uses as much as digits as its factorization.

100271428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 883 (or 598 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 25.

The square root of 100271428 is about 10013.5622033320. The cubic root of 100271428 is about 464.5784563684.

The spelling of 100271428 in words is "one hundred million, two hundred seventy-one thousand, four hundred twenty-eight".