71272456 has 16 divisors (see below), whose sum is σ = 135631440. Its totient is φ = 35104080.

The previous prime is 71272451. The next prime is 71272463. The reversal of 71272456 is 65427217.

It is not an unprimeable number, because it can be changed into a prime (71272451) 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, 65950 + ... + 67021.

It is an arithmetic number, because the mean of its divisors is an integer number (8476965).

Almost surely, 2^71272456 is an apocalyptic number.

It is an amenable number.

71272456 is a deficient number, since it is larger than the sum of its proper divisors (64358984).

71272456 is a wasteful number, since it uses less digits than its factorization.

71272456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133044 (or 133040 counting only the distinct ones).

The product of its digits is 23520, while the sum is 34.

The square root of 71272456 is about 8442.3015819147. The cubic root of 71272456 is about 414.6107658343.

The spelling of 71272456 in words is "seventy-one million, two hundred seventy-two thousand, four hundred fifty-six".