28732532 has 12 divisors (see below), whose sum is σ = 50573796. Its totient is φ = 14282880.

The previous prime is 28732523. The next prime is 28732547. The reversal of 28732532 is 23523782.

It can be written as a sum of positive squares in 2 ways, for example, as 25441936 + 3290596 = 5044^2 + 1814^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20069 + ... + 21452.

It is an arithmetic number, because the mean of its divisors is an integer number (4214483).

Almost surely, 2^28732532 is an apocalyptic number.

It is an amenable number.

28732532 is a deficient number, since it is larger than the sum of its proper divisors (21841264).

28732532 is a wasteful number, since it uses less digits than its factorization.

28732532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41698 (or 41696 counting only the distinct ones).

The product of its digits is 20160, while the sum is 32.

The square root of 28732532 is about 5360.2735004848. The cubic root of 28732532 is about 306.2842276336.

The spelling of 28732532 in words is "twenty-eight million, seven hundred thirty-two thousand, five hundred thirty-two".