20344402530 has 64 divisors (see below), whose sum is σ = 54301985280. Its totient is φ = 5420149632.

The previous prime is 20344402493. The next prime is 20344402541. The reversal of 20344402530 is 3520444302.

20344402530 is a `hidden beast` number, since 203 + 4 + 4 + 402 + 53 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 20344402494 and 20344402503.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 261847 + ... + 330533.

It is an arithmetic number, because the mean of its divisors is an integer number (848468520).

Almost surely, 2^20344402530 is an apocalyptic number.

20344402530 is an abundant number, since it is smaller than the sum of its proper divisors (33957582750).

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

20344402530 is a wasteful number, since it uses less digits than its factorization.

20344402530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69800 (or 69794 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 27.

Adding to 20344402530 its reverse (3520444302), we get a palindrome (23864846832).

The spelling of 20344402530 in words is "twenty billion, three hundred forty-four million, four hundred two thousand, five hundred thirty".