180140247 has 32 divisors (see below), whose sum is σ = 307238400. Its totient is φ = 102181824.

The previous prime is 180140243. The next prime is 180140249. The reversal of 180140247 is 742041081.

It is not a de Polignac number, because 180140247 - 2² = 180140243 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 180140247.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (180140243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22843 + ... + 29699.

It is an arithmetic number, because the mean of its divisors is an integer number (9601200).

Almost surely, 2^180140247 is an apocalyptic number.

180140247 is a deficient number, since it is larger than the sum of its proper divisors (127098153).

180140247 is a wasteful number, since it uses less digits than its factorization.

180140247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7012 (or 7006 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 27.

The square root of 180140247 is about 13421.6335443939. The cubic root of 180140247 is about 564.7682209042.

The spelling of 180140247 in words is "one hundred eighty million, one hundred forty thousand, two hundred forty-seven".