20345496 has 16 divisors (see below), whose sum is σ = 50863800. Its totient is φ = 6781824.

The previous prime is 20345491. The next prime is 20345509. The reversal of 20345496 is 69454302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20345491) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 423841 + ... + 423888.

Almost surely, 2^20345496 is an apocalyptic number.

It is an amenable number.

20345496 is an abundant number, since it is smaller than the sum of its proper divisors (30518304).

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

20345496 is a wasteful number, since it uses less digits than its factorization.

20345496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 847738 (or 847734 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 33.

The square root of 20345496 is about 4510.5981864937. The cubic root of 20345496 is about 272.9958807359.

Adding to 20345496 its reverse (69454302), we get a palindrome (89799798).

The spelling of 20345496 in words is "twenty million, three hundred forty-five thousand, four hundred ninety-six".