72033266 has 4 divisors (see below), whose sum is σ = 108049902. Its totient is φ = 36016632.

The previous prime is 72033259. The next prime is 72033271. The reversal of 72033266 is 66233027.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 66233027 = 7 ⋅9461861.

It can be written as a sum of positive squares in only one way, i.e., 61952641 + 10080625 = 7871^2 + 3175^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18008315 + ... + 18008318.

Almost surely, 2^72033266 is an apocalyptic number.

72033266 is a deficient number, since it is larger than the sum of its proper divisors (36016636).

72033266 is a wasteful number, since it uses less digits than its factorization.

72033266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36016635.

The product of its (nonzero) digits is 9072, while the sum is 29.

The square root of 72033266 is about 8487.2413657207. The cubic root of 72033266 is about 416.0808251792.

The spelling of 72033266 in words is "seventy-two million, thirty-three thousand, two hundred sixty-six".