72462947 has 4 divisors (see below), whose sum is σ = 72751896. Its totient is φ = 72174000.

The previous prime is 72462919. The next prime is 72462991. The reversal of 72462947 is 74926427.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 72462947 - 2⁶ = 72462883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72462847) 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, 144098 + ... + 144599.

It is an arithmetic number, because the mean of its divisors is an integer number (18187974).

Almost surely, 2^72462947 is an apocalyptic number.

72462947 is a deficient number, since it is larger than the sum of its proper divisors (288949).

72462947 is a wasteful number, since it uses less digits than its factorization.

72462947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 288948.

The product of its digits is 169344, while the sum is 41.

The square root of 72462947 is about 8512.5170778096. The cubic root of 72462947 is about 416.9064979456.

The spelling of 72462947 in words is "seventy-two million, four hundred sixty-two thousand, nine hundred forty-seven".