28040364 has 48 divisors (see below), whose sum is σ = 79309440. Its totient is φ = 8496720.

The previous prime is 28040347. The next prime is 28040387. The reversal of 28040364 is 46304082.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10614 + ... + 12989.

It is an arithmetic number, because the mean of its divisors is an integer number (1652280).

Almost surely, 2^28040364 is an apocalyptic number.

It is an amenable number.

28040364 is an abundant number, since it is smaller than the sum of its proper divisors (51269076).

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

28040364 is a wasteful number, since it uses less digits than its factorization.

28040364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23627 (or 23619 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The square root of 28040364 is about 5295.3152880636. The cubic root of 28040364 is about 303.8047424579.

The spelling of 28040364 in words is "twenty-eight million, forty thousand, three hundred sixty-four".