20268045 has 72 divisors (see below), whose sum is σ = 42142464. Its totient is φ = 8823168.

The previous prime is 20268011. The next prime is 20268049. The reversal of 20268045 is 54086202.

It is not a de Polignac number, because 20268045 - 2¹¹ = 20265997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20268049) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 431212 + ... + 431258.

It is an arithmetic number, because the mean of its divisors is an integer number (585312).

Almost surely, 2^20268045 is an apocalyptic number.

It is an amenable number.

20268045 is an abundant number, since it is smaller than the sum of its proper divisors (21874419).

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

20268045 is a wasteful number, since it uses less digits than its factorization.

20268045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139 (or 99 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 20268045 is about 4502.0045535295. The cubic root of 20268045 is about 272.6490277053.

The spelling of 20268045 in words is "twenty million, two hundred sixty-eight thousand, forty-five".