19875028 has 6 divisors (see below), whose sum is σ = 34781306. Its totient is φ = 9937512.

The previous prime is 19875017. The next prime is 19875047. The reversal of 19875028 is 82057891.

It can be written as a sum of positive squares in only one way, i.e., 18818244 + 1056784 = 4338^2 + 1028^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2484375 + ... + 2484382.

Almost surely, 2^19875028 is an apocalyptic number.

It is an amenable number.

19875028 is a deficient number, since it is larger than the sum of its proper divisors (14906278).

19875028 is a wasteful number, since it uses less digits than its factorization.

19875028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4968761 (or 4968759 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 40.

The square root of 19875028 is about 4458.1417653547. The cubic root of 19875028 is about 270.8752029522.

The spelling of 19875028 in words is "nineteen million, eight hundred seventy-five thousand, twenty-eight".