28392364 has 72 divisors (see below), whose sum is σ = 67970448. Its totient is φ = 10200960.

The previous prime is 28392361. The next prime is 28392383. The reversal of 28392364 is 46329382.

It is a super-2 number, since 2×28392364² = 1612252667016992, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28392361) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27522 + ... + 28534.

It is an arithmetic number, because the mean of its divisors is an integer number (944034).

Almost surely, 2^28392364 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28392364, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33985224).

28392364 is an abundant number, since it is smaller than the sum of its proper divisors (39578084).

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

28392364 is a wasteful number, since it uses less digits than its factorization.

28392364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1055 (or 1046 counting only the distinct ones).

The product of its digits is 62208, while the sum is 37.

The square root of 28392364 is about 5328.4485546921. The cubic root of 28392364 is about 305.0707136944.

The spelling of 28392364 in words is "twenty-eight million, three hundred ninety-two thousand, three hundred sixty-four".