20426313 has 8 divisors (see below), whose sum is σ = 27272448. Its totient is φ = 13598864.

The previous prime is 20426309. The next prime is 20426317. The reversal of 20426313 is 31362402.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20426309) and next prime (20426317).

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

It is a cyclic number.

It is not a de Polignac number, because 20426313 - 2² = 20426309 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20426313.

It is not an unprimeable number, because it can be changed into a prime (20426317) 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, 1881 + ... + 6662.

It is an arithmetic number, because the mean of its divisors is an integer number (3409056).

Almost surely, 2^20426313 is an apocalyptic number.

It is an amenable number.

20426313 is a deficient number, since it is larger than the sum of its proper divisors (6846135).

20426313 is an equidigital number, since it uses as much as digits as its factorization.

20426313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9343.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 20426313 is about 4519.5478756176. The cubic root of 20426313 is about 273.3568707010.

Adding to 20426313 its reverse (31362402), we get a palindrome (51788715).

The spelling of 20426313 in words is "twenty million, four hundred twenty-six thousand, three hundred thirteen".