72134516 has 6 divisors (see below), whose sum is σ = 126235410. Its totient is φ = 36067256.

The previous prime is 72134501. The next prime is 72134563. The reversal of 72134516 is 61543127.

It can be written as a sum of positive squares in only one way, i.e., 60777616 + 11356900 = 7796^2 + 3370^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9016811 + ... + 9016818.

It is an arithmetic number, because the mean of its divisors is an integer number (21039235).

Almost surely, 2^72134516 is an apocalyptic number.

It is an amenable number.

72134516 is a deficient number, since it is larger than the sum of its proper divisors (54100894).

72134516 is a wasteful number, since it uses less digits than its factorization.

72134516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18033633 (or 18033631 counting only the distinct ones).

The product of its digits is 5040, while the sum is 29.

The square root of 72134516 is about 8493.2041068139. The cubic root of 72134516 is about 416.2756817264.

The spelling of 72134516 in words is "seventy-two million, one hundred thirty-four thousand, five hundred sixteen".