20268507 has 24 divisors (see below), whose sum is σ = 31658256. Its totient is φ = 11500608.

The previous prime is 20268503. The next prime is 20268511. The reversal of 20268507 is 70586202.

It is an interprime number because it is at equal distance from previous prime (20268503) and next prime (20268511).

It is not a de Polignac number, because 20268507 - 2² = 20268503 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20268503) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25033 + ... + 25829.

It is an arithmetic number, because the mean of its divisors is an integer number (1319094).

Almost surely, 2^20268507 is an apocalyptic number.

20268507 is a deficient number, since it is larger than the sum of its proper divisors (11389749).

20268507 is a wasteful number, since it uses less digits than its factorization.

20268507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 987 (or 980 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 20268507 is about 4502.0558637138. The cubic root of 20268507 is about 272.6510993225.

The spelling of 20268507 in words is "twenty million, two hundred sixty-eight thousand, five hundred seven".