71452940 has 48 divisors (see below), whose sum is σ = 162523200. Its totient is φ = 26231040.

The previous prime is 71452937. The next prime is 71452949. The reversal of 71452940 is 4925417.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 71452897 and 71452906.

It is not an unprimeable number, because it can be changed into a prime (71452949) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51050 + ... + 52430.

It is an arithmetic number, because the mean of its divisors is an integer number (3385900).

Almost surely, 2^71452940 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 71452940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81261600).

71452940 is an abundant number, since it is smaller than the sum of its proper divisors (91070260).

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

71452940 is a wasteful number, since it uses less digits than its factorization.

71452940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1602 (or 1600 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 71452940 is about 8452.9840884743. The cubic root of 71452940 is about 414.9604452551.

The spelling of 71452940 in words is "seventy-one million, four hundred fifty-two thousand, nine hundred forty".