72547134 has 16 divisors (see below), whose sum is σ = 158284800. Its totient is φ = 21983960.

The previous prime is 72547133. The next prime is 72547147. The reversal of 72547134 is 43174527.

It is a super-2 number, since 2×72547134² = 10526173303227912, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a junction number, because it is equal to n+sod(n) for n = 72547095 and 72547104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72547133) 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, 549534 + ... + 549665.

It is an arithmetic number, because the mean of its divisors is an integer number (9892800).

Almost surely, 2^72547134 is an apocalyptic number.

72547134 is an abundant number, since it is smaller than the sum of its proper divisors (85737666).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

72547134 is a wasteful number, since it uses less digits than its factorization.

72547134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1099215.

The product of its digits is 23520, while the sum is 33.

The square root of 72547134 is about 8517.4605370380. The cubic root of 72547134 is about 417.0678885841.

The spelling of 72547134 in words is "seventy-two million, five hundred forty-seven thousand, one hundred thirty-four".