28474532 has 12 divisors (see below), whose sum is σ = 49900620. Its totient is φ = 14217216.

The previous prime is 28474517. The next prime is 28474583. The reversal of 28474532 is 23547482.

It can be written as a sum of positive squares in 2 ways, for example, as 5683456 + 22791076 = 2384^2 + 4774^2 .

It is a junction number, because it is equal to n+sod(n) for n = 28474492 and 28474501.

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, 1553 + ... + 7704.

It is an arithmetic number, because the mean of its divisors is an integer number (4158385).

Almost surely, 2^28474532 is an apocalyptic number.

It is an amenable number.

28474532 is a deficient number, since it is larger than the sum of its proper divisors (21426088).

28474532 is a wasteful number, since it uses less digits than its factorization.

28474532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10030 (or 10028 counting only the distinct ones).

The product of its digits is 53760, while the sum is 35.

The square root of 28474532 is about 5336.1532961488. The cubic root of 28474532 is about 305.3647235875.

The spelling of 28474532 in words is "twenty-eight million, four hundred seventy-four thousand, five hundred thirty-two".