20265960 has 128 divisors (see below), whose sum is σ = 71487360. Its totient is φ = 4531200.

The previous prime is 20265941. The next prime is 20265997. The reversal of 20265960 is 6956202.

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 16570 + ... + 17750.

It is an arithmetic number, because the mean of its divisors is an integer number (558495).

Almost surely, 2^20265960 is an apocalyptic number.

20265960 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 20265960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35743680).

20265960 is an abundant number, since it is smaller than the sum of its proper divisors (51221400).

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

20265960 is a wasteful number, since it uses less digits than its factorization.

20265960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1219 (or 1215 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 20265960 is about 4501.7729840586. The cubic root of 20265960 is about 272.6396781320.

The spelling of 20265960 in words is "twenty million, two hundred sixty-five thousand, nine hundred sixty".