71946890 has 32 divisors (see below), whose sum is σ = 138801600. Its totient is φ = 26754304.

The previous prime is 71946859. The next prime is 71946899. The reversal of 71946890 is 9864917.

Together with 66854710 it forms an amicable pair .

It is not an unprimeable number, because it can be changed into a prime (71946899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11561 + ... + 16659.

It is an arithmetic number, because the mean of its divisors is an integer number (4337550).

Almost surely, 2^71946890 is an apocalyptic number.

71946890 is a deficient number, since it is larger than the sum of its proper divisors (66854710).

71946890 is a wasteful number, since it uses less digits than its factorization.

71946890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5206.

The product of its (nonzero) digits is 108864, while the sum is 44.

The square root of 71946890 is about 8482.1512601462. The cubic root of 71946890 is about 415.9144494010.

The spelling of 71946890 in words is "seventy-one million, nine hundred forty-six thousand, eight hundred ninety".