28337984 has 14 divisors (see below), whose sum is σ = 56233314. Its totient is φ = 14168960.

The previous prime is 28337983. The next prime is 28338049. The reversal of 28337984 is 48973382.

It can be written as a sum of positive squares in only one way, i.e., 14440000 + 13897984 = 3800^2 + 3728^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28337983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221327 + ... + 221454.

Almost surely, 2^28337984 is an apocalyptic number.

It is an amenable number.

28337984 is a deficient number, since it is larger than the sum of its proper divisors (27895330).

28337984 is an equidigital number, since it uses as much as digits as its factorization.

28337984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 442793 (or 442783 counting only the distinct ones).

The product of its digits is 290304, while the sum is 44.

The square root of 28337984 is about 5323.3433103643. The cubic root of 28337984 is about 304.8758215259.

The spelling of 28337984 in words is "twenty-eight million, three hundred thirty-seven thousand, nine hundred eighty-four".