28161932 has 6 divisors (see below), whose sum is σ = 49283388. Its totient is φ = 14080964.

The previous prime is 28161923. The next prime is 28161943. The reversal of 28161932 is 23916182.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3520238 + ... + 3520245.

It is an arithmetic number, because the mean of its divisors is an integer number (8213898).

Almost surely, 2^28161932 is an apocalyptic number.

It is an amenable number.

28161932 is a deficient number, since it is larger than the sum of its proper divisors (21121456).

28161932 is a wasteful number, since it uses less digits than its factorization.

28161932 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7040487 (or 7040485 counting only the distinct ones).

The product of its digits is 5184, while the sum is 32.

The square root of 28161932 is about 5306.7816989207. The cubic root of 28161932 is about 304.2431543762.

The spelling of 28161932 in words is "twenty-eight million, one hundred sixty-one thousand, nine hundred thirty-two".