28867960 has 32 divisors (see below), whose sum is σ = 70858800. Its totient is φ = 10497280.

The previous prime is 28867939. The next prime is 28867999. The reversal of 28867960 is 6976882.

It is a super-2 number, since 2×28867960² = 1666718229123200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 28867960.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32365 + ... + 33244.

Almost surely, 2^28867960 is an apocalyptic number.

28867960 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28867960 is an abundant number, since it is smaller than the sum of its proper divisors (41990840).

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

28867960 is a wasteful number, since it uses less digits than its factorization.

28867960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65631 (or 65627 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 46.

The square root of 28867960 is about 5372.8912142347. The cubic root of 28867960 is about 306.7646872127.

The spelling of 28867960 in words is "twenty-eight million, eight hundred sixty-seven thousand, nine hundred sixty".