72134787 has 8 divisors (see below), whose sum is σ = 96219136. Its totient is φ = 48070152.

The previous prime is 72134761. The next prime is 72134789. The reversal of 72134787 is 78743127.

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

It is a de Polignac number, because none of the positive numbers 2^k-72134787 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72134789) 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, 10638 + ... + 16044.

It is an arithmetic number, because the mean of its divisors is an integer number (12027392).

Almost surely, 2^72134787 is an apocalyptic number.

72134787 is a deficient number, since it is larger than the sum of its proper divisors (24084349).

72134787 is a wasteful number, since it uses less digits than its factorization.

72134787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9857.

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

The square root of 72134787 is about 8493.2200607308. The cubic root of 72134787 is about 416.2762030236.

The spelling of 72134787 in words is "seventy-two million, one hundred thirty-four thousand, seven hundred eighty-seven".