180402740 has 48 divisors (see below), whose sum is σ = 433786752. Its totient is φ = 61735296.

The previous prime is 180402721. The next prime is 180402743. The reversal of 180402740 is 47204081.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (180402743) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 107387 + ... + 109053.

It is an arithmetic number, because the mean of its divisors is an integer number (9037224).

Almost surely, 2^180402740 is an apocalyptic number.

180402740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

180402740 is an abundant number, since it is smaller than the sum of its proper divisors (253384012).

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

180402740 is a wasteful number, since it uses less digits than its factorization.

180402740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2456 (or 2454 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 26.

The square root of 180402740 is about 13431.4087124173. The cubic root of 180402740 is about 565.0424068204.

The spelling of 180402740 in words is "one hundred eighty million, four hundred two thousand, seven hundred forty".