2002220040 has 32 divisors (see below), whose sum is σ = 6006660480. Its totient is φ = 533925312.

The previous prime is 2002220029. The next prime is 2002220041. The reversal of 2002220040 is 400222002.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

It is a junction number, because it is equal to n+sod(n) for n = 2002219998 and 2002220025.

It is not an unprimeable number, because it can be changed into a prime (2002220041) 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, 8342464 + ... + 8342703.

It is an arithmetic number, because the mean of its divisors is an integer number (187708140).

Almost surely, 2^2002220040 is an apocalyptic number.

2002220040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2002220040 is an abundant number, since it is smaller than the sum of its proper divisors (4004440440).

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

2002220040 is a wasteful number, since it uses less digits than its factorization.

2002220040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16685181 (or 16685177 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 12.

The square root of 2002220040 is about 44746.1734676832. The cubic root of 2002220040 is about 1260.3870566997.

Adding to 2002220040 its reverse (400222002), we get a palindrome (2402442042).

The spelling of 2002220040 in words is "two billion, two million, two hundred twenty thousand, forty".