72466281 has 12 divisors (see below), whose sum is σ = 104951808. Its totient is φ = 48182424.

The previous prime is 72466271. The next prime is 72466283. The reversal of 72466281 is 18266427.

72466281 is a `hidden beast` number, since 7 + 24 + 6 + 628 + 1 = 666.

It is not a de Polignac number, because 72466281 - 2⁵ = 72466249 is a prime.

It is a super-2 number, since 2×72466281² = 10502723763941922, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (72466283) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7065 + ... + 13958.

It is an arithmetic number, because the mean of its divisors is an integer number (8745984).

Almost surely, 2^72466281 is an apocalyptic number.

It is an amenable number.

72466281 is a deficient number, since it is larger than the sum of its proper divisors (32485527).

72466281 is a wasteful number, since it uses less digits than its factorization.

72466281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21412 (or 21409 counting only the distinct ones).

The product of its digits is 32256, while the sum is 36.

The square root of 72466281 is about 8512.7129048265. The cubic root of 72466281 is about 416.9128917648.

The spelling of 72466281 in words is "seventy-two million, four hundred sixty-six thousand, two hundred eighty-one".