180396140 has 48 divisors (see below), whose sum is σ = 386958432. Its totient is φ = 70626816.

The previous prime is 180396133. The next prime is 180396143. The reversal of 180396140 is 41693081.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 180396097 and 180396106.

It is not an unprimeable number, because it can be changed into a prime (180396143) 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, 228827 + ... + 229613.

It is an arithmetic number, because the mean of its divisors is an integer number (8061634).

Almost surely, 2^180396140 is an apocalyptic number.

180396140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

180396140 is an abundant number, since it is smaller than the sum of its proper divisors (206562292).

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

180396140 is a wasteful number, since it uses less digits than its factorization.

180396140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1026 (or 1024 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 180396140 is about 13431.1630174010. The cubic root of 180396140 is about 565.0355160800.

The spelling of 180396140 in words is "one hundred eighty million, three hundred ninety-six thousand, one hundred forty".