20345718 has 8 divisors (see below), whose sum is σ = 40691448. Its totient is φ = 6781904.

The previous prime is 20345687. The next prime is 20345723. The reversal of 20345718 is 81754302.

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

20345718 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1695471 + ... + 1695482.

It is an arithmetic number, because the mean of its divisors is an integer number (5086431).

Almost surely, 2^20345718 is an apocalyptic number.

20345718 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20345718 is a wasteful number, since it uses less digits than its factorization.

20345718 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3390958.

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 20345718 is about 4510.6227951359. The cubic root of 20345718 is about 272.9968736644.

The spelling of 20345718 in words is "twenty million, three hundred forty-five thousand, seven hundred eighteen".