180400452 has 24 divisors (see below), whose sum is σ = 424252416. Its totient is φ = 59659488.

The previous prime is 180400433. The next prime is 180400457. The reversal of 180400452 is 254004081.

It is not an unprimeable number, because it can be changed into a prime (180400457) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57663 + ... + 60710.

It is an arithmetic number, because the mean of its divisors is an integer number (17677184).

Almost surely, 2^180400452 is an apocalyptic number.

180400452 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

180400452 is an abundant number, since it is smaller than the sum of its proper divisors (243851964).

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

180400452 is a wasteful number, since it uses less digits than its factorization.

180400452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118507 (or 118505 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 24.

The square root of 180400452 is about 13431.3235386540. The cubic root of 180400452 is about 565.0400180494.

The spelling of 180400452 in words is "one hundred eighty million, four hundred thousand, four hundred fifty-two".