28413616 has 40 divisors (see below), whose sum is σ = 68638464. Its totient is φ = 11069760.

The previous prime is 28413611. The next prime is 28413629. The reversal of 28413616 is 61631482.

It is a happy number.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (28413611) 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, 10300 + ... + 12763.

Almost surely, 2^28413616 is an apocalyptic number.

It is an amenable number.

28413616 is an abundant number, since it is smaller than the sum of its proper divisors (40224848).

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

28413616 is a wasteful number, since it uses less digits than its factorization.

28413616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23089 (or 23083 counting only the distinct ones).

The product of its digits is 6912, while the sum is 31.

The square root of 28413616 is about 5330.4423831423. The cubic root of 28413616 is about 305.1468109842.

The spelling of 28413616 in words is "twenty-eight million, four hundred thirteen thousand, six hundred sixteen".