28001792 has 80 divisors (see below), whose sum is σ = 68974752. Its totient is φ = 11059200.

The previous prime is 28001789. The next prime is 28001819. The reversal of 28001792 is 29710082.

It is a happy number.

It is a super-2 number, since 2×28001792² = 1568200710422528, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46292 + ... + 46892.

Almost surely, 2^28001792 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 28001792, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34487376).

28001792 is an abundant number, since it is smaller than the sum of its proper divisors (40972960).

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

28001792 is an equidigital number, since it uses as much as digits as its factorization.

28001792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 639 (or 623 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 29.

The square root of 28001792 is about 5291.6719475039. The cubic root of 28001792 is about 303.6653751058.

It can be divided in two parts, 2800 and 1792, that multiplied together give a square (5017600 = 2240²).

The spelling of 28001792 in words is "twenty-eight million, one thousand, seven hundred ninety-two".