28831532 has 6 divisors (see below), whose sum is σ = 50455188. Its totient is φ = 14415764.

The previous prime is 28831511. The next prime is 28831573. The reversal of 28831532 is 23513882.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3603938 + ... + 3603945.

It is an arithmetic number, because the mean of its divisors is an integer number (8409198).

Almost surely, 2^28831532 is an apocalyptic number.

It is an amenable number.

28831532 is a deficient number, since it is larger than the sum of its proper divisors (21623656).

28831532 is a wasteful number, since it uses less digits than its factorization.

28831532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7207887 (or 7207885 counting only the distinct ones).

The product of its digits is 11520, while the sum is 32.

The square root of 28831532 is about 5369.5001629574. The cubic root of 28831532 is about 306.6355991422.

The spelling of 28831532 in words is "twenty-eight million, eight hundred thirty-one thousand, five hundred thirty-two".