71789290 has 16 divisors (see below), whose sum is σ = 130240512. Its totient is φ = 28489104.

The previous prime is 71789281. The next prime is 71789293. The reversal of 71789290 is 9298717.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (71789293) 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, 26994 + ... + 29533.

It is an arithmetic number, because the mean of its divisors is an integer number (8140032).

Almost surely, 2^71789290 is an apocalyptic number.

71789290 is a deficient number, since it is larger than the sum of its proper divisors (58451222).

71789290 is a wasteful number, since it uses less digits than its factorization.

71789290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56661.

The product of its (nonzero) digits is 63504, while the sum is 43.

The square root of 71789290 is about 8472.8560710070. The cubic root of 71789290 is about 415.6105398704.

The spelling of 71789290 in words is "seventy-one million, seven hundred eighty-nine thousand, two hundred ninety".