28751274 has 24 divisors (see below), whose sum is σ = 64602720. Its totient is φ = 9583596.

The previous prime is 28751251. The next prime is 28751287. The reversal of 28751274 is 47215782.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29094 + ... + 30065.

It is an arithmetic number, because the mean of its divisors is an integer number (2691780).

Almost surely, 2^28751274 is an apocalyptic number.

28751274 is an abundant number, since it is smaller than the sum of its proper divisors (35851446).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28751274 is an equidigital number, since it uses as much as digits as its factorization.

28751274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59176 (or 59164 counting only the distinct ones).

The product of its digits is 31360, while the sum is 36.

The square root of 28751274 is about 5362.0214471783. The cubic root of 28751274 is about 306.3508087400.

The spelling of 28751274 in words is "twenty-eight million, seven hundred fifty-one thousand, two hundred seventy-four".