28526144 has 28 divisors (see below), whose sum is σ = 59588400. Its totient is φ = 13511808.

The previous prime is 28526129. The next prime is 28526171. The reversal of 28526144 is 44162582.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a self number, because there is not a number n which added to its sum of digits gives 28526144.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10514 + ... + 12945.

Almost surely, 2^28526144 is an apocalyptic number.

It is an amenable number.

28526144 is an abundant number, since it is smaller than the sum of its proper divisors (31062256).

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

28526144 is a wasteful number, since it uses less digits than its factorization.

28526144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23490 (or 23480 counting only the distinct ones).

The product of its digits is 15360, while the sum is 32.

The square root of 28526144 is about 5340.9871746710. The cubic root of 28526144 is about 305.5491102454.

The spelling of 28526144 in words is "twenty-eight million, five hundred twenty-six thousand, one hundred forty-four".