28394768 has 40 divisors (see below), whose sum is σ = 57198720. Its totient is φ = 13645440.

The previous prime is 28394767. The next prime is 28394789. The reversal of 28394768 is 86749382.

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

It is not an unprimeable number, because it can be changed into a prime (28394761) 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, 45563 + ... + 46181.

It is an arithmetic number, because the mean of its divisors is an integer number (1429968).

Almost surely, 2^28394768 is an apocalyptic number.

It is an amenable number.

28394768 is an abundant number, since it is smaller than the sum of its proper divisors (28803952).

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

28394768 is a wasteful number, since it uses less digits than its factorization.

28394768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 735 (or 729 counting only the distinct ones).

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

The square root of 28394768 is about 5328.6741315265. The cubic root of 28394768 is about 305.0793236302.

The spelling of 28394768 in words is "twenty-eight million, three hundred ninety-four thousand, seven hundred sixty-eight".