28567964 has 6 divisors (see below), whose sum is σ = 49993944. Its totient is φ = 14283980.

The previous prime is 28567961. The next prime is 28567967. The reversal of 28567964 is 46976582.

It is an interprime number because it is at equal distance from previous prime (28567961) and next prime (28567967).

It is a super-2 number, since 2×28567964² = 1632257134210592, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28567961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3570992 + ... + 3570999.

It is an arithmetic number, because the mean of its divisors is an integer number (8332324).

Almost surely, 2^28567964 is an apocalyptic number.

It is an amenable number.

28567964 is a deficient number, since it is larger than the sum of its proper divisors (21425980).

28567964 is a wasteful number, since it uses less digits than its factorization.

28567964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7141995 (or 7141993 counting only the distinct ones).

The product of its digits is 725760, while the sum is 47.

The square root of 28567964 is about 5344.9007474414. The cubic root of 28567964 is about 305.6983514065.

The spelling of 28567964 in words is "twenty-eight million, five hundred sixty-seven thousand, nine hundred sixty-four".