28408352 has 24 divisors (see below), whose sum is σ = 63919296. Its totient is φ = 12174912.

The previous prime is 28408349. The next prime is 28408379. The reversal of 28408352 is 25380482.

It is a super-3 number, since 3×28408352³ (a number of 23 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63188 + ... + 63635.

It is an arithmetic number, because the mean of its divisors is an integer number (2663304).

Almost surely, 2^28408352 is an apocalyptic number.

It is an amenable number.

28408352 is an abundant number, since it is smaller than the sum of its proper divisors (35510944).

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

28408352 is a wasteful number, since it uses less digits than its factorization.

28408352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126840 (or 126832 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 32.

The square root of 28408352 is about 5329.9485926226. The cubic root of 28408352 is about 305.1279656529.

The spelling of 28408352 in words is "twenty-eight million, four hundred eight thousand, three hundred fifty-two".