72136274 has 32 divisors (see below), whose sum is σ = 131174400. Its totient is φ = 29062800.

The previous prime is 72136271. The next prime is 72136279. The reversal of 72136274 is 47263127.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 72136274.

It is not an unprimeable number, because it can be changed into a prime (72136271) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35999 + ... + 37949.

It is an arithmetic number, because the mean of its divisors is an integer number (4099200).

Almost surely, 2^72136274 is an apocalyptic number.

72136274 is a deficient number, since it is larger than the sum of its proper divisors (59038126).

72136274 is a wasteful number, since it uses less digits than its factorization.

72136274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2118.

The product of its digits is 14112, while the sum is 32.

The square root of 72136274 is about 8493.3076006936. The cubic root of 72136274 is about 416.2790634025.

The spelling of 72136274 in words is "seventy-two million, one hundred thirty-six thousand, two hundred seventy-four".