28749260 has 24 divisors (see below), whose sum is σ = 60839856. Its totient is φ = 11410880.

The previous prime is 28749251. The next prime is 28749263. The reversal of 28749260 is 6294782.

It is not an unprimeable number, because it can be changed into a prime (28749263) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2867 + ... + 8106.

It is an arithmetic number, because the mean of its divisors is an integer number (2534994).

Almost surely, 2^28749260 is an apocalyptic number.

28749260 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28749260 is an abundant number, since it is smaller than the sum of its proper divisors (32090596).

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

28749260 is a wasteful number, since it uses less digits than its factorization.

28749260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11113 (or 11111 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 28749260 is about 5361.8336415820. The cubic root of 28749260 is about 306.3436553766.

The spelling of 28749260 in words is "twenty-eight million, seven hundred forty-nine thousand, two hundred sixty".