20492313 has 8 divisors (see below), whose sum is σ = 27420768. Its totient is φ = 13612704.

The previous prime is 20492273. The next prime is 20492321. The reversal of 20492313 is 31329402.

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

It is not a de Polignac number, because 20492313 - 2⁶ = 20492249 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20492383) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11220 + ... + 12917.

It is an arithmetic number, because the mean of its divisors is an integer number (3427596).

Almost surely, 2^20492313 is an apocalyptic number.

It is an amenable number.

20492313 is a deficient number, since it is larger than the sum of its proper divisors (6928455).

20492313 is a wasteful number, since it uses less digits than its factorization.

20492313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24423.

The product of its (nonzero) digits is 1296, while the sum is 24.

The square root of 20492313 is about 4526.8436023349. The cubic root of 20492313 is about 273.6509710404.

The spelling of 20492313 in words is "twenty million, four hundred ninety-two thousand, three hundred thirteen".