28913652 has 24 divisors (see below), whose sum is σ = 74961600. Its totient is φ = 9637848.

The previous prime is 28913639. The next prime is 28913657. The reversal of 28913652 is 25631982.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28913657) 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, 133752 + ... + 133967.

It is an arithmetic number, because the mean of its divisors is an integer number (3123400).

Almost surely, 2^28913652 is an apocalyptic number.

It is an amenable number.

28913652 is an abundant number, since it is smaller than the sum of its proper divisors (46047948).

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

28913652 is a wasteful number, since it uses less digits than its factorization.

28913652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267732 (or 267724 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 28913652 is about 5377.1416198572. The cubic root of 28913652 is about 306.9264502123.

The spelling of 28913652 in words is "twenty-eight million, nine hundred thirteen thousand, six hundred fifty-two".