71861372 has 24 divisors (see below), whose sum is σ = 139128192. Its totient is φ = 32202800.

The previous prime is 71861371. The next prime is 71861381. The reversal of 71861372 is 27316817.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71861371) 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, 8378 + ... + 14625.

It is an arithmetic number, because the mean of its divisors is an integer number (5797008).

Almost surely, 2^71861372 is an apocalyptic number.

It is an amenable number.

71861372 is a deficient number, since it is larger than the sum of its proper divisors (67266820).

71861372 is a wasteful number, since it uses less digits than its factorization.

71861372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23089 (or 23087 counting only the distinct ones).

The product of its digits is 14112, while the sum is 35.

The square root of 71861372 is about 8477.1087052131. The cubic root of 71861372 is about 415.7495950498.

It can be divided in two parts, 7186 and 1372, that added together give a palindrome (8558).

The spelling of 71861372 in words is "seventy-one million, eight hundred sixty-one thousand, three hundred seventy-two".