71752940 has 24 divisors (see below), whose sum is σ = 172207392. Its totient is φ = 24600960.

The previous prime is 71752921. The next prime is 71752943. The reversal of 71752940 is 4925717.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 71752940.

It is not an unprimeable number, because it can be changed into a prime (71752943) 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, 256121 + ... + 256400.

It is an arithmetic number, because the mean of its divisors is an integer number (7175308).

Almost surely, 2^71752940 is an apocalyptic number.

71752940 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

71752940 is an abundant number, since it is smaller than the sum of its proper divisors (100454452).

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

71752940 is a wasteful number, since it uses less digits than its factorization.

71752940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 512537 (or 512535 counting only the distinct ones).

The product of its (nonzero) digits is 17640, while the sum is 35.

The square root of 71752940 is about 8470.7107139838. The cubic root of 71752940 is about 415.5403808737.

The spelling of 71752940 in words is "seventy-one million, seven hundred fifty-two thousand, nine hundred forty".