28919036 has 24 divisors (see below), whose sum is σ = 51429840. Its totient is φ = 14227200.

The previous prime is 28919017. The next prime is 28919039. The reversal of 28919036 is 63091982.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28919039) 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, 119876 + ... + 120116.

It is an arithmetic number, because the mean of its divisors is an integer number (2142910).

Almost surely, 2^28919036 is an apocalyptic number.

It is an amenable number.

28919036 is a deficient number, since it is larger than the sum of its proper divisors (22510804).

28919036 is a wasteful number, since it uses less digits than its factorization.

28919036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 605 (or 603 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 38.

The square root of 28919036 is about 5377.6422342882. The cubic root of 28919036 is about 306.9454999153.

The spelling of 28919036 in words is "twenty-eight million, nine hundred nineteen thousand, thirty-six".