71353438 has 16 divisors (see below), whose sum is σ = 116889696. Its totient is φ = 32467680.

The previous prime is 71353433. The next prime is 71353439. The reversal of 71353438 is 83435317.

It is a super-2 number, since 2×71353438² = 10182626228839688, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71353433) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17481 + ... + 21172.

It is an arithmetic number, because the mean of its divisors is an integer number (7305606).

Almost surely, 2^71353438 is an apocalyptic number.

71353438 is a deficient number, since it is larger than the sum of its proper divisors (45536258).

71353438 is a wasteful number, since it uses less digits than its factorization.

71353438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38739.

The product of its digits is 30240, while the sum is 34.

The square root of 71353438 is about 8447.0964242158. The cubic root of 71353438 is about 414.7677376494.

The spelling of 71353438 in words is "seventy-one million, three hundred fifty-three thousand, four hundred thirty-eight".