72134885 has 8 divisors (see below), whose sum is σ = 87605280. Its totient is φ = 57012304.

The previous prime is 72134873. The next prime is 72134903. The reversal of 72134885 is 58843127.

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 72134885 - 2¹⁸ = 71872741 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86495 + ... + 87324.

It is an arithmetic number, because the mean of its divisors is an integer number (10950660).

Almost surely, 2^72134885 is an apocalyptic number.

It is an amenable number.

72134885 is a deficient number, since it is larger than the sum of its proper divisors (15470395).

72134885 is a wasteful number, since it uses less digits than its factorization.

72134885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173907.

The product of its digits is 53760, while the sum is 38.

The square root of 72134885 is about 8493.2258300365. The cubic root of 72134885 is about 416.2763915367.

The spelling of 72134885 in words is "seventy-two million, one hundred thirty-four thousand, eight hundred eighty-five".