20345698 has 8 divisors (see below), whose sum is σ = 30551040. Its totient is φ = 10162020.

The previous prime is 20345687. The next prime is 20345723. The reversal of 20345698 is 89654302.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2818 + ... + 6973.

It is an arithmetic number, because the mean of its divisors is an integer number (3818880).

Almost surely, 2^20345698 is an apocalyptic number.

20345698 is a deficient number, since it is larger than the sum of its proper divisors (10205342).

20345698 is a wasteful number, since it uses less digits than its factorization.

20345698 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10832.

The product of its (nonzero) digits is 51840, while the sum is 37.

The square root of 20345698 is about 4510.6205781466. The cubic root of 20345698 is about 272.9967842117.

The spelling of 20345698 in words is "twenty million, three hundred forty-five thousand, six hundred ninety-eight".