180668740 has 24 divisors (see below), whose sum is σ = 433605312. Its totient is φ = 61943520.

The previous prime is 180668731. The next prime is 180668767. The reversal of 180668740 is 47866081.

It is a super-2 number, since 2×180668740² = 65282387226375200, which contains 22 as substring.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 180668693 and 180668702.

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 7 ways as a sum of consecutive naturals, for example, 645106 + ... + 645385.

It is an arithmetic number, because the mean of its divisors is an integer number (18066888).

Almost surely, 2^180668740 is an apocalyptic number.

180668740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

180668740 is an abundant number, since it is smaller than the sum of its proper divisors (252936572).

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

180668740 is a wasteful number, since it uses less digits than its factorization.

180668740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1290507 (or 1290505 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 40.

The square root of 180668740 is about 13441.3072280936. The cubic root of 180668740 is about 565.3199847712.

The spelling of 180668740 in words is "one hundred eighty million, six hundred sixty-eight thousand, seven hundred forty".