20744230406 has 4 divisors (see below), whose sum is σ = 31116345612. Its totient is φ = 10372115202.

The previous prime is 20744230363. The next prime is 20744230447. The reversal of 20744230406 is 60403244702.

It is a semiprime because it is the product of two primes.

It is a super-3 number, since 3×20744230406³ (a number of 32 digits) contains 333 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5186057600 + ... + 5186057603.

It is an arithmetic number, because the mean of its divisors is an integer number (7779086403).

Almost surely, 2^20744230406 is an apocalyptic number.

20744230406 is a deficient number, since it is larger than the sum of its proper divisors (10372115206).

20744230406 is a wasteful number, since it uses less digits than its factorization.

20744230406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10372115205.

The product of its (nonzero) digits is 32256, while the sum is 32.

The spelling of 20744230406 in words is "twenty billion, seven hundred forty-four million, two hundred thirty thousand, four hundred six".