20233660 has 24 divisors (see below), whose sum is σ = 42640416. Its totient is φ = 8064960.

The previous prime is 20233649. The next prime is 20233663. The reversal of 20233660 is 6633202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20233663) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4594 + ... + 7846.

It is an arithmetic number, because the mean of its divisors is an integer number (1776684).

Almost surely, 2^20233660 is an apocalyptic number.

20233660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20233660 is an abundant number, since it is smaller than the sum of its proper divisors (22406756).

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

20233660 is a wasteful number, since it uses less digits than its factorization.

20233660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3573 (or 3571 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 22.

The square root of 20233660 is about 4498.1840780475. The cubic root of 20233660 is about 272.4947562327.

Adding to 20233660 its reverse (6633202), we get a palindrome (26866862).

The spelling of 20233660 in words is "twenty million, two hundred thirty-three thousand, six hundred sixty".