180472820 has 24 divisors (see below), whose sum is σ = 413447328. Its totient is φ = 65626400.

The previous prime is 180472819. The next prime is 180472843. The reversal of 180472820 is 28274081.

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, 409946 + ... + 410385.

It is an arithmetic number, because the mean of its divisors is an integer number (17226972).

Almost surely, 2^180472820 is an apocalyptic number.

180472820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

180472820 is an abundant number, since it is smaller than the sum of its proper divisors (232974508).

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

180472820 is a wasteful number, since it uses less digits than its factorization.

180472820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 820351 (or 820349 counting only the distinct ones).

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

The square root of 180472820 is about 13434.0172696033. The cubic root of 180472820 is about 565.1155635908.

The spelling of 180472820 in words is "one hundred eighty million, four hundred seventy-two thousand, eight hundred twenty".