20930894 has 8 divisors (see below), whose sum is σ = 33048840. Its totient is φ = 9914616.

The previous prime is 20930891. The next prime is 20930909. The reversal of 20930894 is 49803902.

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 (20930891) 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, 275369 + ... + 275444.

It is an arithmetic number, because the mean of its divisors is an integer number (4131105).

Almost surely, 2^20930894 is an apocalyptic number.

20930894 is a deficient number, since it is larger than the sum of its proper divisors (12117946).

20930894 is a wasteful number, since it uses less digits than its factorization.

20930894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 550834.

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 20930894 is about 4575.0293988126. The cubic root of 20930894 is about 275.5894529806.

The spelling of 20930894 in words is "twenty million, nine hundred thirty thousand, eight hundred ninety-four".