71305790 has 8 divisors (see below), whose sum is σ = 128350440. Its totient is φ = 28522312.

The previous prime is 71305781. The next prime is 71305799. The reversal of 71305790 is 9750317.

It is an interprime number because it is at equal distance from previous prime (71305781) and next prime (71305799).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71305799) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3565280 + ... + 3565299.

It is an arithmetic number, because the mean of its divisors is an integer number (16043805).

Almost surely, 2^71305790 is an apocalyptic number.

71305790 is a deficient number, since it is larger than the sum of its proper divisors (57044650).

71305790 is a wasteful number, since it uses less digits than its factorization.

71305790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7130586.

The product of its (nonzero) digits is 6615, while the sum is 32.

The square root of 71305790 is about 8444.2755757969. The cubic root of 71305790 is about 414.6753933308.

The spelling of 71305790 in words is "seventy-one million, three hundred five thousand, seven hundred ninety".