20023360 has 84 divisors (see below), whose sum is σ = 55508652. Its totient is φ = 6859776.

The previous prime is 20023343. The next prime is 20023379. The reversal of 20023360 is 6332002.

It can be written as a sum of positive squares in 2 ways, for example, as 10188864 + 9834496 = 3192^2 + 3136^2 .

It is a Harshad number since it is a multiple of its sum of digits (16).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15042 + ... + 16318.

Almost surely, 2^20023360 is an apocalyptic number.

20023360 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 20023360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27754326).

20023360 is an abundant number, since it is smaller than the sum of its proper divisors (35485292).

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

20023360 is a wasteful number, since it uses less digits than its factorization.

20023360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1308 (or 1291 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 16.

The square root of 20023360 is about 4474.7469202179. The cubic root of 20023360 is about 271.5474018668.

Adding to 20023360 its reverse (6332002), we get a palindrome (26355362).

The spelling of 20023360 in words is "twenty million, twenty-three thousand, three hundred sixty".