71488764 has 48 divisors (see below), whose sum is σ = 187971840. Its totient is φ = 23491440.

The previous prime is 71488751. The next prime is 71488771. The reversal of 71488764 is 46788417.

It is a super-2 number, since 2×71488764² = 10221286756495392, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3007 + ... + 12329.

It is an arithmetic number, because the mean of its divisors is an integer number (3916080).

Almost surely, 2^71488764 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 71488764, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93985920).

71488764 is an abundant number, since it is smaller than the sum of its proper divisors (116483076).

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

71488764 is a wasteful number, since it uses less digits than its factorization.

71488764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9407 (or 9399 counting only the distinct ones).

The product of its digits is 301056, while the sum is 45.

The square root of 71488764 is about 8455.1028379317. The cubic root of 71488764 is about 415.0297825435.

The spelling of 71488764 in words is "seventy-one million, four hundred eighty-eight thousand, seven hundred sixty-four".