180743540 has 24 divisors (see below), whose sum is σ = 383323752. Its totient is φ = 71580800.

The previous prime is 180743533. The next prime is 180743551. The reversal of 180743540 is 45347081.

It can be written as a sum of positive squares in 4 ways, for example, as 9709456 + 171034084 = 3116^2 + 13078^2 .

It is a junction number, because it is equal to n+sod(n) for n = 180743497 and 180743506.

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, 42719 + ... + 46758.

It is an arithmetic number, because the mean of its divisors is an integer number (15971823).

Almost surely, 2^180743540 is an apocalyptic number.

180743540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

180743540 is an abundant number, since it is smaller than the sum of its proper divisors (202580212).

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

180743540 is a wasteful number, since it uses less digits than its factorization.

180743540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89587 (or 89585 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 32.

The square root of 180743540 is about 13444.0894076170. The cubic root of 180743540 is about 565.3979914415.

The spelling of 180743540 in words is "one hundred eighty million, seven hundred forty-three thousand, five hundred forty".