180399376 has 80 divisors (see below), whose sum is σ = 396135360. Its totient is φ = 79073280.

The previous prime is 180399371. The next prime is 180399377. The reversal of 180399376 is 673993081.

It is a super-2 number, since 2×180399376² = 65087869722378752, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (180399371) 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, 345996 + ... + 346516.

It is an arithmetic number, because the mean of its divisors is an integer number (4951692).

Almost surely, 2^180399376 is an apocalyptic number.

180399376 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 180399376, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (198067680).

180399376 is an abundant number, since it is smaller than the sum of its proper divisors (215735984).

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

180399376 is a wasteful number, since it uses less digits than its factorization.

180399376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 632 (or 626 counting only the distinct ones).

The product of its (nonzero) digits is 244944, while the sum is 46.

The square root of 180399376 is about 13431.2834829736. The cubic root of 180399376 is about 565.0388946519.

The spelling of 180399376 in words is "one hundred eighty million, three hundred ninety-nine thousand, three hundred seventy-six".