20496897 has 12 divisors (see below), whose sum is σ = 29895424. Its totient is φ = 13531320.

The previous prime is 20496863. The next prime is 20496899. The reversal of 20496897 is 79869402.

It is a happy number.

It is not a de Polignac number, because 20496897 - 2⁷ = 20496769 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20496899) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10129 + ... + 11982.

Almost surely, 2^20496897 is an apocalyptic number.

It is an amenable number.

20496897 is a deficient number, since it is larger than the sum of its proper divisors (9398527).

20496897 is a wasteful number, since it uses less digits than its factorization.

20496897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22220 (or 22217 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The square root of 20496897 is about 4527.3498870752. The cubic root of 20496897 is about 273.6713741793.

The spelling of 20496897 in words is "twenty million, four hundred ninety-six thousand, eight hundred ninety-seven".