180723996 has 18 divisors (see below), whose sum is σ = 456830192. Its totient is φ = 60241320.

The previous prime is 180723989. The next prime is 180723997. The reversal of 180723996 is 699327081.

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×180723996² = 65322325460416032, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (180723997) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2510020 + ... + 2510091.

Almost surely, 2^180723996 is an apocalyptic number.

It is an amenable number.

180723996 is an abundant number, since it is smaller than the sum of its proper divisors (276106196).

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

180723996 is a wasteful number, since it uses less digits than its factorization.

180723996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5020121 (or 5020116 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 45.

The square root of 180723996 is about 13443.3625257969. The cubic root of 180723996 is about 565.3776116690.

The spelling of 180723996 in words is "one hundred eighty million, seven hundred twenty-three thousand, nine hundred ninety-six".