71974380 has 24 divisors (see below), whose sum is σ = 201528432. Its totient is φ = 19193152.

The previous prime is 71974373. The next prime is 71974381. The reversal of 71974380 is 8347917.

It is a super-2 number, since 2×71974380² = 10360622752768800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (71974381) 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, 599727 + ... + 599846.

It is an arithmetic number, because the mean of its divisors is an integer number (8397018).

Almost surely, 2^71974380 is an apocalyptic number.

It is an amenable number.

71974380 is an abundant number, since it is smaller than the sum of its proper divisors (129554052).

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

71974380 is a wasteful number, since it uses less digits than its factorization.

71974380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1199585 (or 1199583 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 39.

The square root of 71974380 is about 8483.7715669388. The cubic root of 71974380 is about 415.9674145458.

The spelling of 71974380 in words is "seventy-one million, nine hundred seventy-four thousand, three hundred eighty".