20266260 has 96 divisors (see below), whose sum is σ = 65839872. Its totient is φ = 4561920.

The previous prime is 20266247. The next prime is 20266277. The reversal of 20266260 is 6266202.

It is a self number, because there is not a number n which added to its sum of digits gives 20266260.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 30330 + ... + 30990.

It is an arithmetic number, because the mean of its divisors is an integer number (685832).

Almost surely, 2^20266260 is an apocalyptic number.

20266260 is a gapful number since it is divisible by the number (20) 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 20266260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32919936).

20266260 is an abundant number, since it is smaller than the sum of its proper divisors (45573612).

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

20266260 is a wasteful number, since it uses less digits than its factorization.

20266260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 753 (or 751 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 20266260 is about 4501.8063041406. The cubic root of 20266260 is about 272.6410234338.

The spelling of 20266260 in words is "twenty million, two hundred sixty-six thousand, two hundred sixty".