20262906 has 32 divisors (see below), whose sum is σ = 45198720. Its totient is φ = 6728832.

The previous prime is 20262883. The next prime is 20262917. The reversal of 20262906 is 60926202.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 20262906.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18531 + ... + 19593.

It is an arithmetic number, because the mean of its divisors is an integer number (1412460).

Almost surely, 2^20262906 is an apocalyptic number.

20262906 is an abundant number, since it is smaller than the sum of its proper divisors (24935814).

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

20262906 is a wasteful number, since it uses less digits than its factorization.

20262906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1427 (or 1421 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 20262906 is about 4501.4337715888. The cubic root of 20262906 is about 272.6259822037.

The spelling of 20262906 in words is "twenty million, two hundred sixty-two thousand, nine hundred six".