28938746 has 8 divisors (see below), whose sum is σ = 44331840. Its totient is φ = 14161468.

The previous prime is 28938719. The next prime is 28938769. The reversal of 28938746 is 64783982.

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

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a self number, because there is not a number n which added to its sum of digits gives 28938746.

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, 153836 + ... + 154023.

It is an arithmetic number, because the mean of its divisors is an integer number (5541480).

Almost surely, 2^28938746 is an apocalyptic number.

28938746 is a deficient number, since it is larger than the sum of its proper divisors (15393094).

28938746 is a wasteful number, since it uses less digits than its factorization.

28938746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307908.

The product of its digits is 580608, while the sum is 47.

The square root of 28938746 is about 5379.4745096524. The cubic root of 28938746 is about 307.0152177979.

The spelling of 28938746 in words is "twenty-eight million, nine hundred thirty-eight thousand, seven hundred forty-six".