20234233440 has 288 divisors, whose sum is σ = 73047199680. Its totient is φ = 5089886208.

The previous prime is 20234233433. The next prime is 20234233447. The reversal of 20234233440 is 4433243202.

20234233440 is a `hidden beast` number, since 202 + 3 + 423 + 34 + 4 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (20234233433) and next prime (20234233447).

It is a tau number, because it is divible by the number of its divisors (288).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20234233447) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2413576 + ... + 2421944.

It is an arithmetic number, because the mean of its divisors is an integer number (253636110).

Almost surely, 2^20234233440 is an apocalyptic number.

20234233440 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 20234233440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36523599840).

20234233440 is an abundant number, since it is smaller than the sum of its proper divisors (52812966240).

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

20234233440 is a wasteful number, since it uses less digits than its factorization.

20234233440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8486 (or 8475 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 27.

Adding to 20234233440 its reverse (4433243202), we get a palindrome (24667476642).

The spelling of 20234233440 in words is "twenty billion, two hundred thirty-four million, two hundred thirty-three thousand, four hundred forty".