28315704 has 32 divisors (see below), whose sum is σ = 70928640. Its totient is φ = 9420000.

The previous prime is 28315673. The next prime is 28315709. The reversal of 28315704 is 40751382.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28315709) 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, 17239 + ... + 18809.

It is an arithmetic number, because the mean of its divisors is an integer number (2216520).

Almost surely, 2^28315704 is an apocalyptic number.

28315704 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

28315704 is an abundant number, since it is smaller than the sum of its proper divisors (42612936).

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

28315704 is a wasteful number, since it uses less digits than its factorization.

28315704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2331 (or 2327 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 28315704 is about 5321.2502290345. The cubic root of 28315704 is about 304.7959003589.

The spelling of 28315704 in words is "twenty-eight million, three hundred fifteen thousand, seven hundred four".