2002622640 has 80 divisors (see below), whose sum is σ = 6214373088. Its totient is φ = 533495808.

The previous prime is 2002622639. The next prime is 2002622641. The reversal of 2002622640 is 462262002.

It is an interprime number because it is at equal distance from previous prime (2002622639) and next prime (2002622641).

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 2002622640.

It is not an unprimeable number, because it can be changed into a prime (2002622641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 273102 + ... + 280338.

Almost surely, 2^2002622640 is an apocalyptic number.

2002622640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2002622640 is an abundant number, since it is smaller than the sum of its proper divisors (4211750448).

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

2002622640 is a wasteful number, since it uses less digits than its factorization.

2002622640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8406 (or 8400 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 2002622640 is about 44750.6719502624. The cubic root of 2002622640 is about 1260.4715292371.

Adding to 2002622640 its reverse (462262002), we get a palindrome (2464884642).

The spelling of 2002622640 in words is "two billion, two million, six hundred twenty-two thousand, six hundred forty".