71245464 has 32 divisors (see below), whose sum is σ = 178379520. Its totient is φ = 23713056.

The previous prime is 71245463. The next prime is 71245469. The reversal of 71245464 is 46454217.

It is a super-2 number, since 2×71245464² = 10151832281150592, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71245463) 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, 17949 + ... + 21555.

It is an arithmetic number, because the mean of its divisors is an integer number (5574360).

Almost surely, 2^71245464 is an apocalyptic number.

It is an amenable number.

71245464 is an abundant number, since it is smaller than the sum of its proper divisors (107134056).

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

71245464 is a wasteful number, since it uses less digits than its factorization.

71245464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4439 (or 4435 counting only the distinct ones).

The product of its digits is 26880, while the sum is 33.

The square root of 71245464 is about 8440.7028143396. The cubic root of 71245464 is about 414.5584193531.

The spelling of 71245464 in words is "seventy-one million, two hundred forty-five thousand, four hundred sixty-four".