28252944 has 30 divisors (see below), whose sum is σ = 79069406. Its totient is φ = 9417600.

The previous prime is 28252937. The next prime is 28252979. The reversal of 28252944 is 44925282.

It can be written as a sum of positive squares in only one way, i.e., 27878400 + 374544 = 5280^2 + 612^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 28252899 and 28252908.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 97957 + ... + 98244.

Almost surely, 2^28252944 is an apocalyptic number.

28252944 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

28252944 is an abundant number, since it is smaller than the sum of its proper divisors (50816462).

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

28252944 is a wasteful number, since it uses less digits than its factorization.

28252944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196215 (or 196206 counting only the distinct ones).

The product of its digits is 46080, while the sum is 36.

The square root of 28252944 is about 5315.3498473760. The cubic root of 28252944 is about 304.5705467191.

The spelling of 28252944 in words is "twenty-eight million, two hundred fifty-two thousand, nine hundred forty-four".