28704192 has 56 divisors (see below), whose sum is σ = 82856832. Its totient is φ = 8697600.

The previous prime is 28704173. The next prime is 28704197. The reversal of 28704192 is 29140782.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28704197) 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, 4684 + ... + 8907.

Almost surely, 2^28704192 is an apocalyptic number.

28704192 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

28704192 is an abundant number, since it is smaller than the sum of its proper divisors (54152640).

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

28704192 is a wasteful number, since it uses less digits than its factorization.

28704192 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13617 (or 13607 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 28704192 is about 5357.6293264839. The cubic root of 28704192 is about 306.1834945410.

The spelling of 28704192 in words is "twenty-eight million, seven hundred four thousand, one hundred ninety-two".