28435402384 has 15 divisors (see below), whose sum is σ = 55094899017. Its totient is φ = 14217363936.

The previous prime is 28435402379. The next prime is 28435402399. The reversal of 28435402384 is 48320453482.

The square root of 28435402384 is 168628.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 5414016400 + 23021385984 = 73580^2 + 151728^2 .

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28435402384.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 653434 + ... + 695590.

Almost surely, 2^28435402384 is an apocalyptic number.

28435402384 is the 168628-th square number.

It is an amenable number.

28435402384 is a deficient number, since it is larger than the sum of its proper divisors (26659496633).

28435402384 is an frugal number, since it uses more digits than its factorization.

28435402384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84322 (or 42159 counting only the distinct ones).

The product of its (nonzero) digits is 737280, while the sum is 43.

The spelling of 28435402384 in words is "twenty-eight billion, four hundred thirty-five million, four hundred two thousand, three hundred eighty-four".