28708452 has 24 divisors (see below), whose sum is σ = 74429600. Its totient is φ = 9569448.

The previous prime is 28708429. The next prime is 28708453. The reversal of 28708452 is 25480782.

It is a happy number.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (28708453) 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, 132802 + ... + 133017.

Almost surely, 2^28708452 is an apocalyptic number.

It is an amenable number.

28708452 is an abundant number, since it is smaller than the sum of its proper divisors (45721148).

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

28708452 is a wasteful number, since it uses less digits than its factorization.

28708452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265832 (or 265824 counting only the distinct ones).

The product of its (nonzero) digits is 35840, while the sum is 36.

The square root of 28708452 is about 5358.0268756325. The cubic root of 28708452 is about 306.1986407279.

The spelling of 28708452 in words is "twenty-eight million, seven hundred eight thousand, four hundred fifty-two".