72476281 has 8 divisors (see below), whose sum is σ = 74173320. Its totient is φ = 70791552.

The previous prime is 72476273. The next prime is 72476291. The reversal of 72476281 is 18267427.

It can be written as a sum of positive squares in 4 ways, for example, as 921600 + 71554681 = 960^2 + 8459^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 72476281 - 2³ = 72476273 is a prime.

It is a super-2 number, since 2×72476281² = 10505622615181922, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 72476281.

It is not an unprimeable number, because it can be changed into a prime (72476291) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9415 + ... + 15283.

It is an arithmetic number, because the mean of its divisors is an integer number (9271665).

Almost surely, 2^72476281 is an apocalyptic number.

It is an amenable number.

72476281 is a deficient number, since it is larger than the sum of its proper divisors (1697039).

72476281 is a wasteful number, since it uses less digits than its factorization.

72476281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6155.

The product of its digits is 37632, while the sum is 37.

The square root of 72476281 is about 8513.3002413870. The cubic root of 72476281 is about 416.9320682107.

The spelling of 72476281 in words is "seventy-two million, four hundred seventy-six thousand, two hundred eighty-one".