28749376 has 14 divisors (see below), whose sum is σ = 57049670. Its totient is φ = 14374656.

The previous prime is 28749367. The next prime is 28749389. The reversal of 28749376 is 67394782.

It can be written as a sum of positive squares in only one way, i.e., 18662400 + 10086976 = 4320^2 + 3176^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 224541 + ... + 224668.

Almost surely, 2^28749376 is an apocalyptic number.

It is an amenable number.

28749376 is a deficient number, since it is larger than the sum of its proper divisors (28300294).

28749376 is an equidigital number, since it uses as much as digits as its factorization.

28749376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 449221 (or 449211 counting only the distinct ones).

The product of its digits is 508032, while the sum is 46.

The square root of 28749376 is about 5361.8444587660. The cubic root of 28749376 is about 306.3440673966.

The spelling of 28749376 in words is "twenty-eight million, seven hundred forty-nine thousand, three hundred seventy-six".