72624181 has 8 divisors (see below), whose sum is σ = 84238400. Its totient is φ = 61319808.

The previous prime is 72624143. The next prime is 72624197. The reversal of 72624181 is 18142627.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 72624181 - 2⁷ = 72624053 is a prime.

It is a super-2 number, since 2×72624181² = 10548543331841522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72621181) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76956 + ... + 77893.

It is an arithmetic number, because the mean of its divisors is an integer number (10529800).

Almost surely, 2^72624181 is an apocalyptic number.

It is an amenable number.

72624181 is a deficient number, since it is larger than the sum of its proper divisors (11614219).

72624181 is a wasteful number, since it uses less digits than its factorization.

72624181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154923.

The product of its digits is 5376, while the sum is 31.

The square root of 72624181 is about 8521.9822224644. The cubic root of 72624181 is about 417.2154821043.

The spelling of 72624181 in words is "seventy-two million, six hundred twenty-four thousand, one hundred eighty-one".