20347086 has 8 divisors (see below), whose sum is σ = 40694184. Its totient is φ = 6782360.

The previous prime is 20347073. The next prime is 20347121. The reversal of 20347086 is 68074302.

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

20347086 is an admirable number.

It is a plaindrome in base 16.

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, 1695585 + ... + 1695596.

It is an arithmetic number, because the mean of its divisors is an integer number (5086773).

Almost surely, 2^20347086 is an apocalyptic number.

20347086 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.

20347086 is a wasteful number, since it uses less digits than its factorization.

20347086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3391186.

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 20347086 is about 4510.7744346176. The cubic root of 20347086 is about 273.0029920911.

The spelling of 20347086 in words is "twenty million, three hundred forty-seven thousand, eighty-six".