28463944 has 16 divisors (see below), whose sum is σ = 53596800. Its totient is φ = 14171472.

The previous prime is 28463887. The next prime is 28463959. The reversal of 28463944 is 44936482.

It is a super-2 number, since 2×28463944² = 1620392216070272, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28463897 and 28463906.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5532 + ... + 9355.

It is an arithmetic number, because the mean of its divisors is an integer number (3349800).

Almost surely, 2^28463944 is an apocalyptic number.

It is an amenable number.

28463944 is a deficient number, since it is larger than the sum of its proper divisors (25132856).

28463944 is a wasteful number, since it uses less digits than its factorization.

28463944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15132 (or 15128 counting only the distinct ones).

The product of its digits is 165888, while the sum is 40.

The square root of 28463944 is about 5335.1611034719. The cubic root of 28463944 is about 305.3268698483.

The spelling of 28463944 in words is "twenty-eight million, four hundred sixty-three thousand, nine hundred forty-four".