28161752 has 32 divisors (see below), whose sum is σ = 56458080. Its totient is φ = 13136640.

The previous prime is 28161701. The next prime is 28161767. The reversal of 28161752 is 25716182.

It is a Smith number, since the sum of its digits (32) coincides with the sum of the digits of its prime factors.

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, 5678 + ... + 9410.

It is an arithmetic number, because the mean of its divisors is an integer number (1764315).

Almost surely, 2^28161752 is an apocalyptic number.

It is an amenable number.

28161752 is an abundant number, since it is smaller than the sum of its proper divisors (28296328).

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

28161752 is a wasteful number, since it uses less digits than its factorization.

28161752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3803 (or 3799 counting only the distinct ones).

The product of its digits is 6720, while the sum is 32.

The square root of 28161752 is about 5306.7647394623. The cubic root of 28161752 is about 304.2425061739.

The spelling of 28161752 in words is "twenty-eight million, one hundred sixty-one thousand, seven hundred fifty-two".