2640002046 has 64 divisors (see below), whose sum is σ = 6122200320. Its totient is φ = 750056960.

The previous prime is 2640002041. The next prime is 2640002069. The reversal of 2640002046 is 6402000462.

It is a super-2 number, since 2×2640002046² = 13939221605768372232, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2640002041) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 297445 + ... + 306191.

It is an arithmetic number, because the mean of its divisors is an integer number (95659380).

Almost surely, 2^2640002046 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2640002046, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3061100160).

2640002046 is an abundant number, since it is smaller than the sum of its proper divisors (3482198274).

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

2640002046 is a wasteful number, since it uses less digits than its factorization.

2640002046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9049.

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

The square root of 2640002046 is about 51380.9502247672. The cubic root of 2640002046 is about 1382.0850030407.

The spelling of 2640002046 in words is "two billion, six hundred forty million, two thousand, forty-six".