71904946 has 16 divisors (see below), whose sum is σ = 112730688. Its totient is φ = 34333200.

The previous prime is 71904919. The next prime is 71904947. The reversal of 71904946 is 64940917.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 71904899 and 71904908.

It is not an unprimeable number, because it can be changed into a prime (71904947) 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, 46201 + ... + 47731.

It is an arithmetic number, because the mean of its divisors is an integer number (7045668).

Almost surely, 2^71904946 is an apocalyptic number.

71904946 is a deficient number, since it is larger than the sum of its proper divisors (40825742).

71904946 is a wasteful number, since it uses less digits than its factorization.

71904946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2577.

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 71904946 is about 8479.6784137136. The cubic root of 71904946 is about 415.8336096462.

The spelling of 71904946 in words is "seventy-one million, nine hundred four thousand, nine hundred forty-six".