72144782 has 8 divisors (see below), whose sum is σ = 108256152. Its totient is φ = 36059400.

The previous prime is 72144773. The next prime is 72144791. The reversal of 72144782 is 28744127.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (72144773) and next prime (72144791).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3557 + ... + 12527.

It is an arithmetic number, because the mean of its divisors is an integer number (13532019).

Almost surely, 2^72144782 is an apocalyptic number.

72144782 is a deficient number, since it is larger than the sum of its proper divisors (36111370).

72144782 is a wasteful number, since it uses less digits than its factorization.

72144782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12994.

The product of its digits is 25088, while the sum is 35.

The square root of 72144782 is about 8493.8084508658. The cubic root of 72144782 is about 416.2954285534.

The spelling of 72144782 in words is "seventy-two million, one hundred forty-four thousand, seven hundred eighty-two".