28877132 has 6 divisors (see below), whose sum is σ = 50534988. Its totient is φ = 14438564.

The previous prime is 28877117. The next prime is 28877153. The reversal of 28877132 is 23177882.

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 as a sum of consecutive naturals, namely, 3609638 + ... + 3609645.

It is an arithmetic number, because the mean of its divisors is an integer number (8422498).

Almost surely, 2^28877132 is an apocalyptic number.

It is an amenable number.

28877132 is a deficient number, since it is larger than the sum of its proper divisors (21657856).

28877132 is a wasteful number, since it uses less digits than its factorization.

28877132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7219287 (or 7219285 counting only the distinct ones).

The product of its digits is 37632, while the sum is 38.

The square root of 28877132 is about 5373.7446906231. The cubic root of 28877132 is about 306.7971724521.

The spelling of 28877132 in words is "twenty-eight million, eight hundred seventy-seven thousand, one hundred thirty-two".