71994494 has 32 divisors (see below), whose sum is σ = 127854720. Its totient is φ = 29973600.

The previous prime is 71994491. The next prime is 71994509. The reversal of 71994494 is 49449917.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71994491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38849 + ... + 40659.

It is an arithmetic number, because the mean of its divisors is an integer number (3995460).

Almost surely, 2^71994494 is an apocalyptic number.

71994494 is a deficient number, since it is larger than the sum of its proper divisors (55860226).

71994494 is a wasteful number, since it uses less digits than its factorization.

71994494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1976.

The product of its digits is 326592, while the sum is 47.

The square root of 71994494 is about 8484.9569238742. The cubic root of 71994494 is about 416.0061597646.

The spelling of 71994494 in words is "seventy-one million, nine hundred ninety-four thousand, four hundred ninety-four".