28744892 has 48 divisors (see below), whose sum is σ = 58931712. Its totient is φ = 12122880.

The previous prime is 28744889. The next prime is 28744939. The reversal of 28744892 is 29844782.

It is a Harshad number since it is a multiple of its sum of digits (44).

Its product of digits (258048) is a multiple of the sum of its prime divisors (576).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61853 + ... + 62315.

It is an arithmetic number, because the mean of its divisors is an integer number (1227744).

Almost surely, 2^28744892 is an apocalyptic number.

28744892 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

28744892 is an abundant number, since it is smaller than the sum of its proper divisors (30186820).

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

28744892 is a wasteful number, since it uses less digits than its factorization.

28744892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 578 (or 576 counting only the distinct ones).

The product of its digits is 258048, while the sum is 44.

The square root of 28744892 is about 5361.4263027668. The cubic root of 28744892 is about 306.3281398832.

The spelling of 28744892 in words is "twenty-eight million, seven hundred forty-four thousand, eight hundred ninety-two".