20268497 has 8 divisors (see below), whose sum is σ = 22263360. Its totient is φ = 18366480.

The previous prime is 20268491. The next prime is 20268499. The reversal of 20268497 is 79486202.

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 20268497 - 2⁴ = 20268481 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20268497.

It is not an unprimeable number, because it can be changed into a prime (20268491) 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, 22754 + ... + 23627.

It is an arithmetic number, because the mean of its divisors is an integer number (2782920).

Almost surely, 2^20268497 is an apocalyptic number.

It is an amenable number.

20268497 is a deficient number, since it is larger than the sum of its proper divisors (1994863).

20268497 is a wasteful number, since it uses less digits than its factorization.

20268497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46423.

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 20268497 is about 4502.0547531100. The cubic root of 20268497 is about 272.6510544827.

The spelling of 20268497 in words is "twenty million, two hundred sixty-eight thousand, four hundred ninety-seven".