71293970 has 32 divisors (see below), whose sum is σ = 140870016. Its totient is φ = 25763200.

The previous prime is 71293969. The next prime is 71293973. The reversal of 71293970 is 7939217.

It is not an unprimeable number, because it can be changed into a prime (71293973) 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, 16430 + ... + 20310.

It is an arithmetic number, because the mean of its divisors is an integer number (4402188).

Almost surely, 2^71293970 is an apocalyptic number.

71293970 is a deficient number, since it is larger than the sum of its proper divisors (69576046).

71293970 is a wasteful number, since it uses less digits than its factorization.

71293970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4066.

The product of its (nonzero) digits is 23814, while the sum is 38.

The square root of 71293970 is about 8443.5756643735. The cubic root of 71293970 is about 414.6524791841.

The spelling of 71293970 in words is "seventy-one million, two hundred ninety-three thousand, nine hundred seventy".