28315344 has 20 divisors (see below), whose sum is σ = 73148096. Its totient is φ = 9438432.

The previous prime is 28315337. The next prime is 28315361. The reversal of 28315344 is 44351382.

It is a congruent number.

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, 294904 + ... + 294999.

Almost surely, 2^28315344 is an apocalyptic number.

28315344 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

28315344 is an abundant number, since it is smaller than the sum of its proper divisors (44832752).

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

28315344 is a wasteful number, since it uses less digits than its factorization.

28315344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 589914 (or 589908 counting only the distinct ones).

The product of its digits is 11520, while the sum is 30.

The square root of 28315344 is about 5321.2164022900. The cubic root of 28315344 is about 304.7946086494.

The spelling of 28315344 in words is "twenty-eight million, three hundred fifteen thousand, three hundred forty-four".