20602424040 has 64 divisors (see below), whose sum is σ = 67426119360. Its totient is φ = 4994526720.

The previous prime is 20602423991. The next prime is 20602424069. The reversal of 20602424040 is 4042420602.

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 20602424040.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7802629 + ... + 7805268.

It is an arithmetic number, because the mean of its divisors is an integer number (1053533115).

Almost surely, 2^20602424040 is an apocalyptic number.

20602424040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20602424040 is an abundant number, since it is smaller than the sum of its proper divisors (46823695320).

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

20602424040 is a wasteful number, since it uses less digits than its factorization.

20602424040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15607922 (or 15607918 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

Adding to 20602424040 its reverse (4042420602), we get a palindrome (24644844642).

The spelling of 20602424040 in words is "twenty billion, six hundred two million, four hundred twenty-four thousand, forty".