28953776 has 20 divisors (see below), whose sum is σ = 56209944. Its totient is φ = 14448000.

The previous prime is 28953763. The next prime is 28953791. The reversal of 28953776 is 67735982.

It is a super-2 number, since 2×28953776² = 1676642289316352, 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 28953776.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8111 + ... + 11121.

Almost surely, 2^28953776 is an apocalyptic number.

It is an amenable number.

28953776 is a deficient number, since it is larger than the sum of its proper divisors (27256168).

28953776 is a wasteful number, since it uses less digits than its factorization.

28953776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3620 (or 3614 counting only the distinct ones).

The product of its digits is 635040, while the sum is 47.

The square root of 28953776 is about 5380.8713049096. The cubic root of 28953776 is about 307.0683603919.

The spelling of 28953776 in words is "twenty-eight million, nine hundred fifty-three thousand, seven hundred seventy-six".