20342316 has 24 divisors (see below), whose sum is σ = 47565504. Its totient is φ = 6766480.

The previous prime is 20342303. The next prime is 20342317. The reversal of 20342316 is 61324302.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20342292 and 20342301.

It is not an unprimeable number, because it can be changed into a prime (20342317) 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, 5251 + ... + 8261.

It is an arithmetic number, because the mean of its divisors is an integer number (1981896).

Almost surely, 2^20342316 is an apocalyptic number.

It is an amenable number.

20342316 is an abundant number, since it is smaller than the sum of its proper divisors (27223188).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20342316 is a wasteful number, since it uses less digits than its factorization.

20342316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3581 (or 3579 counting only the distinct ones).

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

The square root of 20342316 is about 4510.2456695839. The cubic root of 20342316 is about 272.9816569140.

Adding to 20342316 its reverse (61324302), we get a palindrome (81666618).

The spelling of 20342316 in words is "twenty million, three hundred forty-two thousand, three hundred sixteen".