71693240 has 16 divisors (see below), whose sum is σ = 161309880. Its totient is φ = 28677280.

The previous prime is 71693221. The next prime is 71693243. The reversal of 71693240 is 4239617.

It is a junction number, because it is equal to n+sod(n) for n = 71693197 and 71693206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71693243) 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, 896126 + ... + 896205.

Almost surely, 2^71693240 is an apocalyptic number.

It is an amenable number.

71693240 is an abundant number, since it is smaller than the sum of its proper divisors (89616640).

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

71693240 is a wasteful number, since it uses less digits than its factorization.

71693240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1792342 (or 1792338 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 32.

The square root of 71693240 is about 8467.1860733068. The cubic root of 71693240 is about 415.4251026978.

The spelling of 71693240 in words is "seventy-one million, six hundred ninety-three thousand, two hundred forty".