71203940 has 12 divisors (see below), whose sum is σ = 149528316. Its totient is φ = 28481568.

The previous prime is 71203927. The next prime is 71203943. The reversal of 71203940 is 4930217.

It can be written as a sum of positive squares in 2 ways, for example, as 26152996 + 45050944 = 5114^2 + 6712^2 .

It is not an unprimeable number, because it can be changed into a prime (71203943) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1780079 + ... + 1780118.

It is an arithmetic number, because the mean of its divisors is an integer number (12460693).

Almost surely, 2^71203940 is an apocalyptic number.

It is an amenable number.

71203940 is an abundant number, since it is smaller than the sum of its proper divisors (78324376).

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

71203940 is a wasteful number, since it uses less digits than its factorization.

71203940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3560206 (or 3560204 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 71203940 is about 8438.2427080524. The cubic root of 71203940 is about 414.4778646612.

The spelling of 71203940 in words is "seventy-one million, two hundred three thousand, nine hundred forty".