71464520 has 16 divisors (see below), whose sum is σ = 160795260. Its totient is φ = 28585792.

The previous prime is 71464499. The next prime is 71464531. The reversal of 71464520 is 2546417.

It can be written as a sum of positive squares in 2 ways, for example, as 70795396 + 669124 = 8414^2 + 818^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 893267 + ... + 893346.

Almost surely, 2^71464520 is an apocalyptic number.

It is an amenable number.

71464520 is an abundant number, since it is smaller than the sum of its proper divisors (89330740).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71464520 is a wasteful number, since it uses less digits than its factorization.

71464520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1786624 (or 1786620 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 71464520 is about 8453.6690259319. The cubic root of 71464520 is about 414.9828608589.

The spelling of 71464520 in words is "seventy-one million, four hundred sixty-four thousand, five hundred twenty".