28412880 has 40 divisors (see below), whose sum is σ = 88080672. Its totient is φ = 7576704.

The previous prime is 28412861. The next prime is 28412897. The reversal of 28412880 is 8821482.

It is a tau number, because it is divible by the number of its divisors (40).

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, 58954 + ... + 59433.

Almost surely, 2^28412880 is an apocalyptic number.

28412880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28412880 is an abundant number, since it is smaller than the sum of its proper divisors (59667792).

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

28412880 is a wasteful number, since it uses less digits than its factorization.

28412880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118403 (or 118397 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 33.

The square root of 28412880 is about 5330.3733452733. The cubic root of 28412880 is about 305.1441762146.

It can be divided in two parts, 28412 and 880, that added together give a palindrome (29292).

The spelling of 28412880 in words is "twenty-eight million, four hundred twelve thousand, eight hundred eighty".