28419628 has 24 divisors (see below), whose sum is σ = 52399872. Its totient is φ = 13460304.

The previous prime is 28419619. The next prime is 28419641. The reversal of 28419628 is 82691482.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is an upside-down number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8401 + ... + 11287.

It is an arithmetic number, because the mean of its divisors is an integer number (2183328).

Almost surely, 2^28419628 is an apocalyptic number.

It is an amenable number.

28419628 is a deficient number, since it is larger than the sum of its proper divisors (23980244).

28419628 is a wasteful number, since it uses less digits than its factorization.

28419628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3021 (or 3019 counting only the distinct ones).

The product of its digits is 55296, while the sum is 40.

The square root of 28419628 is about 5331.0062839955. The cubic root of 28419628 is about 305.1683313385.

The spelling of 28419628 in words is "twenty-eight million, four hundred nineteen thousand, six hundred twenty-eight".