28472180 has 24 divisors (see below), whose sum is σ = 65227680. Its totient is φ = 10353440.

The previous prime is 28472159. The next prime is 28472201. The reversal of 28472180 is 8127482.

It is an interprime number because it is at equal distance from previous prime (28472159) and next prime (28472201).

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, 64490 + ... + 64929.

It is an arithmetic number, because the mean of its divisors is an integer number (2717820).

Almost surely, 2^28472180 is an apocalyptic number.

28472180 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28472180 is an abundant number, since it is smaller than the sum of its proper divisors (36755500).

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

28472180 is a wasteful number, since it uses less digits than its factorization.

28472180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129439 (or 129437 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 32.

The square root of 28472180 is about 5335.9329081239. The cubic root of 28472180 is about 305.3563156342.

The spelling of 28472180 in words is "twenty-eight million, four hundred seventy-two thousand, one hundred eighty".