20032234440 has 64 divisors (see below), whose sum is σ = 60106363200. Its totient is φ = 5341070592.

The previous prime is 20032234421. The next prime is 20032234477. The reversal of 20032234440 is 4443223002.

It is a super-2 number, since 2×20032234440² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 20032234440.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1167846 + ... + 1184874.

It is an arithmetic number, because the mean of its divisors is an integer number (939161925).

Almost surely, 2^20032234440 is an apocalyptic number.

20032234440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20032234440 is an abundant number, since it is smaller than the sum of its proper divisors (40074128760).

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

20032234440 is a wasteful number, since it uses less digits than its factorization.

20032234440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26846 (or 26842 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 24.

Adding to 20032234440 its reverse (4443223002), we get a palindrome (24475457442).

The spelling of 20032234440 in words is "twenty billion, thirty-two million, two hundred thirty-four thousand, four hundred forty".