71540398 has 8 divisors (see below), whose sum is σ = 107435592. Its totient is φ = 35728536.

The previous prime is 71540383. The next prime is 71540423. The reversal of 71540398 is 89304517.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18640 + ... + 22147.

It is an arithmetic number, because the mean of its divisors is an integer number (13429449).

Almost surely, 2^71540398 is an apocalyptic number.

71540398 is a deficient number, since it is larger than the sum of its proper divisors (35895194).

71540398 is a wasteful number, since it uses less digits than its factorization.

71540398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41666.

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 71540398 is about 8458.1557091366. The cubic root of 71540398 is about 415.1296793168.

The spelling of 71540398 in words is "seventy-one million, five hundred forty thousand, three hundred ninety-eight".