20267268 has 48 divisors (see below), whose sum is σ = 55515264. Its totient is φ = 5633280.

The previous prime is 20267263. The next prime is 20267279. The reversal of 20267268 is 86276202.

It is not an unprimeable number, because it can be changed into a prime (20267263) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 153 + ... + 6368.

It is an arithmetic number, because the mean of its divisors is an integer number (1156568).

Almost surely, 2^20267268 is an apocalyptic number.

20267268 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20267268, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27757632).

20267268 is an abundant number, since it is smaller than the sum of its proper divisors (35247996).

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

20267268 is a wasteful number, since it uses less digits than its factorization.

20267268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6572 (or 6570 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 33.

The square root of 20267268 is about 4501.9182578097. The cubic root of 20267268 is about 272.6455435508.

The spelling of 20267268 in words is "twenty million, two hundred sixty-seven thousand, two hundred sixty-eight".