28599012 has 72 divisors (see below), whose sum is σ = 79390584. Its totient is φ = 8626176.

The previous prime is 28598989. The next prime is 28599041. The reversal of 28599012 is 21099582.

It can be written as a sum of positive squares in 4 ways, for example, as 5788836 + 22810176 = 2406^2 + 4776^2 .

It is a super-2 number, since 2×28599012² = 1635806974752288, which contains 22 as substring.

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

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24228 + ... + 25380.

It is an arithmetic number, because the mean of its divisors is an integer number (1102647).

Almost surely, 2^28599012 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28599012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39695292).

28599012 is an abundant number, since it is smaller than the sum of its proper divisors (50791572).

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

28599012 is a wasteful number, since it uses less digits than its factorization.

28599012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1229 (or 1224 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 36.

The square root of 28599012 is about 5347.8044092880. The cubic root of 28599012 is about 305.8090568347.

The spelling of 28599012 in words is "twenty-eight million, five hundred ninety-nine thousand, twelve".