28348032 has 32 divisors (see below), whose sum is σ = 75300480. Its totient is φ = 9449216.

The previous prime is 28348009. The next prime is 28348037. The reversal of 28348032 is 23084382.

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-2 number, since 2×28348032² = 1607221836546048, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28348037) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36528 + ... + 37295.

It is an arithmetic number, because the mean of its divisors is an integer number (2353140).

Almost surely, 2^28348032 is an apocalyptic number.

It is an amenable number.

28348032 is an abundant number, since it is smaller than the sum of its proper divisors (46952448).

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

28348032 is an equidigital number, since it uses as much as digits as its factorization.

28348032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73840 (or 73828 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 30.

The square root of 28348032 is about 5324.2869945186. The cubic root of 28348032 is about 304.9118512620.

The spelling of 28348032 in words is "twenty-eight million, three hundred forty-eight thousand, thirty-two".