28529616 has 20 divisors (see below), whose sum is σ = 73701632. Its totient is φ = 9509856.

The previous prime is 28529581. The next prime is 28529617. The reversal of 28529616 is 61692582.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28529617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 297136 + ... + 297231.

Almost surely, 2^28529616 is an apocalyptic number.

It is an amenable number.

28529616 is an abundant number, since it is smaller than the sum of its proper divisors (45172016).

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

28529616 is a wasteful number, since it uses less digits than its factorization.

28529616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 594378 (or 594372 counting only the distinct ones).

The product of its digits is 51840, while the sum is 39.

The square root of 28529616 is about 5341.3121983273. The cubic root of 28529616 is about 305.5615061663.

The spelling of 28529616 in words is "twenty-eight million, five hundred twenty-nine thousand, six hundred sixteen".