72474530 has 8 divisors (see below), whose sum is σ = 130454172. Its totient is φ = 28989808.

The previous prime is 72474529. The next prime is 72474533. The reversal of 72474530 is 3547427.

It can be written as a sum of positive squares in 2 ways, for example, as 71284249 + 1190281 = 8443^2 + 1091^2 .

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

It is not an unprimeable number, because it can be changed into a prime (72474533) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3623717 + ... + 3623736.

Almost surely, 2^72474530 is an apocalyptic number.

72474530 is a deficient number, since it is larger than the sum of its proper divisors (57979642).

72474530 is a wasteful number, since it uses less digits than its factorization.

72474530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7247460.

The product of its (nonzero) digits is 23520, while the sum is 32.

The square root of 72474530 is about 8513.1974016817. The cubic root of 72474530 is about 416.9287105424.

The spelling of 72474530 in words is "seventy-two million, four hundred seventy-four thousand, five hundred thirty".