20907814 has 8 divisors (see below), whose sum is σ = 31434480. Its totient is φ = 10429656.

The previous prime is 20907781. The next prime is 20907823. The reversal of 20907814 is 41870902.

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

It is a congruent number.

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, 11029 + ... + 12784.

It is an arithmetic number, because the mean of its divisors is an integer number (3929310).

Almost surely, 2^20907814 is an apocalyptic number.

20907814 is a deficient number, since it is larger than the sum of its proper divisors (10526666).

20907814 is a wasteful number, since it uses less digits than its factorization.

20907814 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24254.

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 20907814 is about 4572.5063149218. The cubic root of 20907814 is about 275.4881204096.

The spelling of 20907814 in words is "twenty million, nine hundred seven thousand, eight hundred fourteen".