71500038 has 16 divisors (see below), whose sum is σ = 143166720. Its totient is φ = 23805576.

The previous prime is 71500027. The next prime is 71500057. The reversal of 71500038 is 83000517.

It is a super-2 number, since 2×71500038² = 10224510868002888, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 71499990 and 71500017.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 970 + ... + 11997.

It is an arithmetic number, because the mean of its divisors is an integer number (8947920).

Almost surely, 2^71500038 is an apocalyptic number.

71500038 is an abundant number, since it is smaller than the sum of its proper divisors (71666682).

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

71500038 is a wasteful number, since it uses less digits than its factorization.

71500038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13891.

The product of its (nonzero) digits is 840, while the sum is 24.

The square root of 71500038 is about 8455.7695096307. The cubic root of 71500038 is about 415.0515985584.

The spelling of 71500038 in words is "seventy-one million, five hundred thousand, thirty-eight".