71942720 has 56 divisors (see below), whose sum is σ = 172053504. Its totient is φ = 28653056.

The previous prime is 71942701. The next prime is 71942743. The reversal of 71942720 is 2724917.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 122267 + ... + 122853.

It is an arithmetic number, because the mean of its divisors is an integer number (3072384).

Almost surely, 2^71942720 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 71942720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86026752).

71942720 is an abundant number, since it is smaller than the sum of its proper divisors (100110784).

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

71942720 is a wasteful number, since it uses less digits than its factorization.

71942720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 987 (or 977 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 32.

The square root of 71942720 is about 8481.9054463016. The cubic root of 71942720 is about 415.9064138591.

The spelling of 71942720 in words is "seventy-one million, nine hundred forty-two thousand, seven hundred twenty".