20284743236 has 12 divisors (see below), whose sum is σ = 36643407360. Its totient is φ = 9815198280.

The previous prime is 20284743181. The next prime is 20284743287. The reversal of 20284743236 is 63234748202.

It is a super-2 number, since 2×20284743236² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20284743193 and 20284743202.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81793196 + ... + 81793443.

It is an arithmetic number, because the mean of its divisors is an integer number (3053617280).

Almost surely, 2^20284743236 is an apocalyptic number.

It is an amenable number.

20284743236 is a deficient number, since it is larger than the sum of its proper divisors (16358664124).

20284743236 is a wasteful number, since it uses less digits than its factorization.

20284743236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163586674 (or 163586672 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 41.

The spelling of 20284743236 in words is "twenty billion, two hundred eighty-four million, seven hundred forty-three thousand, two hundred thirty-six".