28938946 has 8 divisors (see below), whose sum is σ = 43931664. Its totient is φ = 14295060.

The previous prime is 28938937. The next prime is 28938953. The reversal of 28938946 is 64983982.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 28938946.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 87000 + ... + 87331.

It is an arithmetic number, because the mean of its divisors is an integer number (5491458).

Almost surely, 2^28938946 is an apocalyptic number.

28938946 is a deficient number, since it is larger than the sum of its proper divisors (14992718).

28938946 is a wasteful number, since it uses less digits than its factorization.

28938946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174416.

The product of its digits is 746496, while the sum is 49.

The square root of 28938946 is about 5379.4930987966. The cubic root of 28938946 is about 307.0159250723.

The spelling of 28938946 in words is "twenty-eight million, nine hundred thirty-eight thousand, nine hundred forty-six".