20857334 has 8 divisors (see below), whose sum is σ = 33126408. Its totient is φ = 9815200.

The previous prime is 20857321. The next prime is 20857357. The reversal of 20857334 is 43375802.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 20857334.

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, 306692 + ... + 306759.

It is an arithmetic number, because the mean of its divisors is an integer number (4140801).

Almost surely, 2^20857334 is an apocalyptic number.

20857334 is a deficient number, since it is larger than the sum of its proper divisors (12269074).

20857334 is a wasteful number, since it uses less digits than its factorization.

20857334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 613470.

The product of its (nonzero) digits is 20160, while the sum is 32.

The square root of 20857334 is about 4566.9830304042. The cubic root of 20857334 is about 275.2662281312.

The spelling of 20857334 in words is "twenty million, eight hundred fifty-seven thousand, three hundred thirty-four".