71880536 has 32 divisors (see below), whose sum is σ = 165879840. Its totient is φ = 28435968.

The previous prime is 71880533. The next prime is 71880541. The reversal of 71880536 is 63508817.

It is a super-2 number, since 2×71880536² = 10333622911294592, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 71880536.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71880533) 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, 48641 + ... + 50096.

It is an arithmetic number, because the mean of its divisors is an integer number (5183745).

Almost surely, 2^71880536 is an apocalyptic number.

It is an amenable number.

71880536 is an abundant number, since it is smaller than the sum of its proper divisors (93999304).

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

71880536 is a wasteful number, since it uses less digits than its factorization.

71880536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98763 (or 98759 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 38.

The square root of 71880536 is about 8478.2389680877. The cubic root of 71880536 is about 415.7865491503.

The spelling of 71880536 in words is "seventy-one million, eight hundred eighty thousand, five hundred thirty-six".