71722400 has 36 divisors (see below), whose sum is σ = 175094262. Its totient is φ = 28688640.

The previous prime is 71722367. The next prime is 71722403. The reversal of 71722400 is 422717.

It can be written as a sum of positive squares in 3 ways, for example, as 66650896 + 5071504 = 8164^2 + 2252^2 .

It is not an unprimeable number, because it can be changed into a prime (71722403) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 44027 + ... + 45626.

Almost surely, 2^71722400 is an apocalyptic number.

It is an amenable number.

71722400 is an abundant number, since it is smaller than the sum of its proper divisors (103371862).

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

71722400 is a wasteful number, since it uses less digits than its factorization.

71722400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89673 (or 89660 counting only the distinct ones).

The product of its (nonzero) digits is 784, while the sum is 23.

The square root of 71722400 is about 8468.9078398575. The cubic root of 71722400 is about 415.4814174168.

The spelling of 71722400 in words is "seventy-one million, seven hundred twenty-two thousand, four hundred".