72274 has 4 divisors (see below), whose sum is σ = 108414. Its totient is φ = 36136.

The previous prime is 72271. The next prime is 72277. The reversal of 72274 is 47227.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 47227 = 83 ⋅569.

It is an interprime number because it is at equal distance from previous prime (72271) and next prime (72277).

It can be written as a sum of positive squares in only one way, i.e., 59049 + 13225 = 243^2 + 115^2 .

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a plaindrome in base 12.

It is not an unprimeable number, because it can be changed into a prime (72271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18067 + ... + 18070.

2⁷²²⁷⁴ is an apocalyptic number.

72274 is a deficient number, since it is larger than the sum of its proper divisors (36140).

72274 is a wasteful number, since it uses less digits than its factorization.

72274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36139.

The product of its digits is 784, while the sum is 22.

The square root of 72274 is about 268.8382413274. The cubic root of 72274 is about 41.6543821563.

The spelling of 72274 in words is "seventy-two thousand, two hundred seventy-four", and thus it is an iban number.