20232004232440 has 512 divisors, whose sum is σ = 64518612480000. Its totient is φ = 5620256409600.

The previous prime is 20232004232417. The next prime is 20232004232501. The reversal of 20232004232440 is 4423240023202.

It is a happy number.

It is a super-2 number, since 2×20232004232440² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 20232004232399 and 20232004232408.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 56719045 + ... + 57074635.

It is an arithmetic number, because the mean of its divisors is an integer number (126012915000).

Almost surely, 2^{20232004232440} is an apocalyptic number.

20232004232440 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 20232004232440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32259306240000).

20232004232440 is an abundant number, since it is smaller than the sum of its proper divisors (44286608247560).

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

20232004232440 is a wasteful number, since it uses less digits than its factorization.

20232004232440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 355676 (or 355658 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 28.

Adding to 20232004232440 its reverse (4423240023202), we get a palindrome (24655244255642).

The spelling of 20232004232440 in words is "twenty trillion, two hundred thirty-two billion, four million, two hundred thirty-two thousand, four hundred forty".