2626400440 has 32 divisors (see below), whose sum is σ = 6046832880. Its totient is φ = 1026127872.

The previous prime is 2626400437. The next prime is 2626400459. The reversal of 2626400440 is 440046262.

It is a junction number, because it is equal to n+sod(n) for n = 2626400399 and 2626400408.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 761769 + ... + 765208.

Almost surely, 2^2626400440 is an apocalyptic number.

2626400440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2626400440 is an abundant number, since it is smaller than the sum of its proper divisors (3420432440).

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

2626400440 is a wasteful number, since it uses less digits than its factorization.

2626400440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1527031 (or 1527027 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

The square root of 2626400440 is about 51248.4189024403. The cubic root of 2626400440 is about 1379.7073593575.

The spelling of 2626400440 in words is "two billion, six hundred twenty-six million, four hundred thousand, four hundred forty".