28943404 has 12 divisors (see below), whose sum is σ = 57886864. Its totient is φ = 12404304.

The previous prime is 28943389. The next prime is 28943443. The reversal of 28943404 is 40434982.

28943404 is an admirable number.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 28943404.

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, 516819 + ... + 516874.

Almost surely, 2^28943404 is an apocalyptic number.

It is an amenable number.

28943404 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

28943404 is a wasteful number, since it uses less digits than its factorization.

28943404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1033704 (or 1033702 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 34.

The square root of 28943404 is about 5379.9074341479. The cubic root of 28943404 is about 307.0316893728.

The spelling of 28943404 in words is "twenty-eight million, nine hundred forty-three thousand, four hundred four".