20203022340 has 144 divisors (see below), whose sum is σ = 62167123200. Its totient is φ = 5309950464.

The previous prime is 20203022317. The next prime is 20203022383. The reversal of 20203022340 is 4322030202.

20203022340 is a `hidden beast` number, since 2 + 0 + 20 + 302 + 2 + 340 = 666.

It is a super-2 number, since 2×20203022340² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 12555456 + ... + 12557064.

Almost surely, 2^20203022340 is an apocalyptic number.

20203022340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20203022340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31083561600).

20203022340 is an abundant number, since it is smaller than the sum of its proper divisors (41964100860).

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

20203022340 is a wasteful number, since it uses less digits than its factorization.

20203022340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2586 (or 2581 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 18.

Adding to 20203022340 its reverse (4322030202), we get a palindrome (24525052542).

The spelling of 20203022340 in words is "twenty billion, two hundred three million, twenty-two thousand, three hundred forty".