28934628 has 12 divisors (see below), whose sum is σ = 67514160. Its totient is φ = 9644872.

The previous prime is 28934627. The next prime is 28934651. The reversal of 28934628 is 82643982.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 28934628.

It is not an unprimeable number, because it can be changed into a prime (28934627) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1205598 + ... + 1205621.

It is an arithmetic number, because the mean of its divisors is an integer number (5626180).

Almost surely, 2^28934628 is an apocalyptic number.

It is an amenable number.

28934628 is an abundant number, since it is smaller than the sum of its proper divisors (38579532).

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

28934628 is a wasteful number, since it uses less digits than its factorization.

28934628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2411226 (or 2411224 counting only the distinct ones).

The product of its digits is 165888, while the sum is 42.

The square root of 28934628 is about 5379.0917448952. The cubic root of 28934628 is about 307.0006542938. Note that the first 3 decimals are identical.

The spelling of 28934628 in words is "twenty-eight million, nine hundred thirty-four thousand, six hundred twenty-eight".