20319394 has 8 divisors (see below), whose sum is σ = 30521628. Its totient is φ = 10145520.

The previous prime is 20319389. The next prime is 20319413. The reversal of 20319394 is 49391302.

It can be written as a sum of positive squares in 2 ways, for example, as 18173169 + 2146225 = 4263^2 + 1465^2 .

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

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, 5197 + ... + 8224.

Almost surely, 2^20319394 is an apocalyptic number.

20319394 is a deficient number, since it is larger than the sum of its proper divisors (10202234).

20319394 is a wasteful number, since it uses less digits than its factorization.

20319394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14180.

The product of its (nonzero) digits is 5832, while the sum is 31.

The square root of 20319394 is about 4507.7038500771. The cubic root of 20319394 is about 272.8790852226.

The spelling of 20319394 in words is "twenty million, three hundred nineteen thousand, three hundred ninety-four".