20233400 has 96 divisors (see below), whose sum is σ = 54438480. Its totient is φ = 6912000.

The previous prime is 20233363. The next prime is 20233427. The reversal of 20233400 is 433202.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 37130 + ... + 37670.

Almost surely, 2^20233400 is an apocalyptic number.

20233400 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 20233400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27219240).

20233400 is an abundant number, since it is smaller than the sum of its proper divisors (34205080).

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

20233400 is a wasteful number, since it uses less digits than its factorization.

20233400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 585 (or 576 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 14.

The square root of 20233400 is about 4498.1551774033. The cubic root of 20233400 is about 272.4935890532.

Adding to 20233400 its reverse (433202), we get a palindrome (20666602).

The spelling of 20233400 in words is "twenty million, two hundred thirty-three thousand, four hundred".