2023021440 has 512 divisors, whose sum is σ = 8107776000. Its totient is φ = 472227840.

The previous prime is 2023021393. The next prime is 2023021487. The reversal of 2023021440 is 441203202.

2023021440 is a `hidden beast` number, since 202 + 3 + 0 + 21 + 440 = 666.

It is an interprime number because it is at equal distance from previous prime (2023021393) and next prime (2023021487).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5512137 + ... + 5512503.

It is an arithmetic number, because the mean of its divisors is an integer number (15835500).

Almost surely, 2^2023021440 is an apocalyptic number.

2023021440 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 2023021440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4053888000).

2023021440 is an abundant number, since it is smaller than the sum of its proper divisors (6084754560).

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

2023021440 is a wasteful number, since it uses less digits than its factorization.

2023021440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 435 (or 417 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 2023021440 is about 44978.0106274166. The cubic root of 2023021440 is about 1264.7368187098.

Adding to 2023021440 its reverse (441203202), we get a palindrome (2464224642).

The spelling of 2023021440 in words is "two billion, twenty-three million, twenty-one thousand, four hundred forty".