180427640 has 32 divisors (see below), whose sum is σ = 423614880. Its totient is φ = 69032832.

The previous prime is 180427633. The next prime is 180427649. The reversal of 180427640 is 46724081.

It is a junction number, because it is equal to n+sod(n) for n = 180427597 and 180427606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (180427649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 97139 + ... + 98978.

It is an arithmetic number, because the mean of its divisors is an integer number (13237965).

Almost surely, 2^180427640 is an apocalyptic number.

180427640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

180427640 is an abundant number, since it is smaller than the sum of its proper divisors (243187240).

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

180427640 is a wasteful number, since it uses less digits than its factorization.

180427640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196151 (or 196147 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 32.

The square root of 180427640 is about 13432.3356122455. The cubic root of 180427640 is about 565.0684021918.

The spelling of 180427640 in words is "one hundred eighty million, four hundred twenty-seven thousand, six hundred forty".