28776052 has 6 divisors (see below), whose sum is σ = 50358098. Its totient is φ = 14388024.

The previous prime is 28776043. The next prime is 28776101. The reversal of 28776052 is 25067782.

It can be written as a sum of positive squares in only one way, i.e., 25664356 + 3111696 = 5066^2 + 1764^2 .

It is a super-2 number, since 2×28776052² = 1656122337413408, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3597003 + ... + 3597010.

Almost surely, 2^28776052 is an apocalyptic number.

It is an amenable number.

28776052 is a deficient number, since it is larger than the sum of its proper divisors (21582046).

28776052 is a wasteful number, since it uses less digits than its factorization.

28776052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7194017 (or 7194015 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 37.

The square root of 28776052 is about 5364.3314588120. The cubic root of 28776052 is about 306.4387883868.

The spelling of 28776052 in words is "twenty-eight million, seven hundred seventy-six thousand, fifty-two".