20032226840 has 32 divisors (see below), whose sum is σ = 45707340960. Its totient is φ = 7900032000.

The previous prime is 20032226833. The next prime is 20032226849. The reversal of 20032226840 is 4862223002.

It is a super-2 number, since 2×20032226840² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20032226849) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3523961 + ... + 3529640.

It is an arithmetic number, because the mean of its divisors is an integer number (1428354405).

Almost surely, 2^20032226840 is an apocalyptic number.

20032226840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20032226840 is an abundant number, since it is smaller than the sum of its proper divisors (25675114120).

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

20032226840 is a wasteful number, since it uses less digits than its factorization.

20032226840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7053683 (or 7053679 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 29.

Adding to 20032226840 its reverse (4862223002), we get a palindrome (24894449842).

The spelling of 20032226840 in words is "twenty billion, thirty-two million, two hundred twenty-six thousand, eight hundred forty".