72743178 has 16 divisors (see below), whose sum is σ = 145823040. Its totient is φ = 24191616.

The previous prime is 72743161. The next prime is 72743179. The reversal of 72743178 is 87134727.

It is not an unprimeable number, because it can be changed into a prime (72743179) 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, 11175 + ... + 16442.

It is an arithmetic number, because the mean of its divisors is an integer number (9113940).

Almost surely, 2^72743178 is an apocalyptic number.

72743178 is an abundant number, since it is smaller than the sum of its proper divisors (73079862).

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

72743178 is a wasteful number, since it uses less digits than its factorization.

72743178 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28061.

The product of its digits is 65856, while the sum is 39.

The square root of 72743178 is about 8528.9611325178. The cubic root of 72743178 is about 417.4432313123.

The spelling of 72743178 in words is "seventy-two million, seven hundred forty-three thousand, one hundred seventy-eight".