72366274 has 4 divisors (see below), whose sum is σ = 108549414. Its totient is φ = 36183136.

The previous prime is 72366247. The next prime is 72366293. The reversal of 72366274 is 47266327.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 47266327 = 701 ⋅67427.

It can be written as a sum of positive squares in only one way, i.e., 72131049 + 235225 = 8493^2 + 485^2 .

It is a super-2 number, since 2×72366274² = 10473755225286152, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18091567 + ... + 18091570.

Almost surely, 2^72366274 is an apocalyptic number.

72366274 is a deficient number, since it is larger than the sum of its proper divisors (36183140).

72366274 is a wasteful number, since it uses less digits than its factorization.

72366274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36183139.

The product of its digits is 84672, while the sum is 37.

The square root of 72366274 is about 8506.8368974608. The cubic root of 72366274 is about 416.7210167680.

The spelling of 72366274 in words is "seventy-two million, three hundred sixty-six thousand, two hundred seventy-four".