20267900 has 18 divisors (see below), whose sum is σ = 43981560. Its totient is φ = 8107120.

The previous prime is 20267887. The next prime is 20267903. The reversal of 20267900 is 976202.

It is a self number, because there is not a number n which added to its sum of digits gives 20267900.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20267903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 101240 + ... + 101439.

It is an arithmetic number, because the mean of its divisors is an integer number (2443420).

Almost surely, 2^20267900 is an apocalyptic number.

20267900 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20267900 is an abundant number, since it is smaller than the sum of its proper divisors (23713660).

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

20267900 is a wasteful number, since it uses less digits than its factorization.

20267900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202693 (or 202686 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 20267900 is about 4501.9884495631. The cubic root of 20267900 is about 272.6483775159.

The spelling of 20267900 in words is "twenty million, two hundred sixty-seven thousand, nine hundred".