72134732 has 6 divisors (see below), whose sum is σ = 126235788. Its totient is φ = 36067364.

The previous prime is 72134701. The next prime is 72134761. The reversal of 72134732 is 23743127.

It is a junction number, because it is equal to n+sod(n) for n = 72134695 and 72134704.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9016838 + ... + 9016845.

It is an arithmetic number, because the mean of its divisors is an integer number (21039298).

Almost surely, 2^72134732 is an apocalyptic number.

It is an amenable number.

72134732 is a deficient number, since it is larger than the sum of its proper divisors (54101056).

72134732 is a wasteful number, since it uses less digits than its factorization.

72134732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18033687 (or 18033685 counting only the distinct ones).

The product of its digits is 7056, while the sum is 29.

The square root of 72134732 is about 8493.2168228534. The cubic root of 72134732 is about 416.2760972254.

Adding to 72134732 its reverse (23743127), we get a palindrome (95877859).

It can be divided in two parts, 721 and 34732, that added together give a palindrome (35453).

The spelling of 72134732 in words is "seventy-two million, one hundred thirty-four thousand, seven hundred thirty-two".