2624206640 has 80 divisors (see below), whose sum is σ = 6818376096. Its totient is φ = 930969600.

The previous prime is 2624206609. The next prime is 2624206657. The reversal of 2624206640 is 466024262.

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

It is a junction number, because it is equal to n+sod(n) for n = 2624206597 and 2624206606.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 287 + ... + 72446.

Almost surely, 2^2624206640 is an apocalyptic number.

2624206640 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 2624206640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3409188048).

2624206640 is an abundant number, since it is smaller than the sum of its proper divisors (4194169456).

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

2624206640 is a wasteful number, since it uses less digits than its factorization.

2624206640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72798 (or 72792 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 32.

The square root of 2624206640 is about 51227.0108438898. The cubic root of 2624206640 is about 1379.3231014837.

The spelling of 2624206640 in words is "two billion, six hundred twenty-four million, two hundred six thousand, six hundred forty".