20402230344 has 32 divisors (see below), whose sum is σ = 51082779840. Its totient is φ = 6790449600.

The previous prime is 20402230313. The next prime is 20402230357. The reversal of 20402230344 is 44303220402.

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

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 627172 + ... + 658899.

It is an arithmetic number, because the mean of its divisors is an integer number (1596336870).

Almost surely, 2^20402230344 is an apocalyptic number.

20402230344 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20402230344 is an abundant number, since it is smaller than the sum of its proper divisors (30680549496).

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

20402230344 is a wasteful number, since it uses less digits than its factorization.

20402230344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1286741 (or 1286737 counting only the distinct ones).

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

Adding to 20402230344 its reverse (44303220402), we get a palindrome (64705450746).

The spelling of 20402230344 in words is "twenty billion, four hundred two million, two hundred thirty thousand, three hundred forty-four".