20102233340 has 144 divisors (see below), whose sum is σ = 52441240320. Its totient is φ = 6439587840.

The previous prime is 20102233279. The next prime is 20102233363. The reversal of 20102233340 is 4333220102.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

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, 869612 + ... + 892428.

It is an arithmetic number, because the mean of its divisors is an integer number (364175280).

Almost surely, 2^20102233340 is an apocalyptic number.

20102233340 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 20102233340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26220620160).

20102233340 is an abundant number, since it is smaller than the sum of its proper divisors (32339006980).

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

20102233340 is a wasteful number, since it uses less digits than its factorization.

20102233340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22900 (or 22891 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

Adding to 20102233340 its reverse (4333220102), we get a palindrome (24435453442).

The spelling of 20102233340 in words is "twenty billion, one hundred two million, two hundred thirty-three thousand, three hundred forty".