180742530 has 32 divisors (see below), whose sum is σ = 438084288. Its totient is φ = 47720000.

The previous prime is 180742519. The next prime is 180742531. The reversal of 180742530 is 35247081.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (180742531) 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 15 ways as a sum of consecutive naturals, for example, 26796 + ... + 32855.

It is an arithmetic number, because the mean of its divisors is an integer number (13690134).

Almost surely, 2^180742530 is an apocalyptic number.

180742530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

180742530 is an abundant number, since it is smaller than the sum of its proper divisors (257341758).

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

180742530 is a wasteful number, since it uses less digits than its factorization.

180742530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59762.

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 180742530 is about 13444.0518445891. The cubic root of 180742530 is about 565.3969382862.

The spelling of 180742530 in words is "one hundred eighty million, seven hundred forty-two thousand, five hundred thirty".