19128402 has 24 divisors (see below), whose sum is σ = 43626960. Its totient is φ = 6040440.

The previous prime is 19128397. The next prime is 19128413. The reversal of 19128402 is 20482191.

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, 27624 + ... + 28307.

It is an arithmetic number, because the mean of its divisors is an integer number (1817790).

Almost surely, 2^19128402 is an apocalyptic number.

19128402 is an abundant number, since it is smaller than the sum of its proper divisors (24498558).

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

19128402 is a wasteful number, since it uses less digits than its factorization.

19128402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55958 (or 55955 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 19128402 is about 4373.6028626294. The cubic root of 19128402 is about 267.4399177957.

The spelling of 19128402 in words is "nineteen million, one hundred twenty-eight thousand, four hundred two".