20404396422 has 32 divisors (see below), whose sum is σ = 46086440160. Its totient is φ = 6689964960.

The previous prime is 20404396399. The next prime is 20404396469. The reversal of 20404396422 is 22469340402.

20404396422 is a `hidden beast` number, since 2 + 0 + 4 + 0 + 4 + 3 + 9 + 642 + 2 = 666.

It is a super-2 number, since 2×20404396422² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3093913 + ... + 3100500.

It is an arithmetic number, because the mean of its divisors is an integer number (1440201255).

Almost surely, 2^20404396422 is an apocalyptic number.

20404396422 is an abundant number, since it is smaller than the sum of its proper divisors (25682043738).

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

20404396422 is a wasteful number, since it uses less digits than its factorization.

20404396422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6194485 (or 6194479 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 36.

The spelling of 20404396422 in words is "twenty billion, four hundred four million, three hundred ninety-six thousand, four hundred twenty-two".