20496497 has 12 divisors (see below), whose sum is σ = 24725376. Its totient is φ = 16641720.

The previous prime is 20496479. The next prime is 20496499. The reversal of 20496497 is 79469402.

It is not a de Polignac number, because 20496497 - 2¹⁰ = 20495473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20496499) 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, 1529 + ... + 6582.

It is an arithmetic number, because the mean of its divisors is an integer number (2060448).

Almost surely, 2^20496497 is an apocalyptic number.

It is an amenable number.

20496497 is a deficient number, since it is larger than the sum of its proper divisors (4228879).

20496497 is an equidigital number, since it uses as much as digits as its factorization.

20496497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8156 (or 8137 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 41.

The square root of 20496497 is about 4527.3057109058. The cubic root of 20496497 is about 273.6695939218.

The spelling of 20496497 in words is "twenty million, four hundred ninety-six thousand, four hundred ninety-seven".