2780026396 has 12 divisors (see below), whose sum is σ = 5560052848. Its totient is φ = 1191439872.

The previous prime is 2780026393. The next prime is 2780026409. The reversal of 2780026396 is 6936200872.

2780026396 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2780026393) 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 3 ways as a sum of consecutive naturals, for example, 49643301 + ... + 49643356.

Almost surely, 2^2780026396 is an apocalyptic number.

It is an amenable number.

2780026396 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2780026396 is a wasteful number, since it uses less digits than its factorization.

2780026396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99286668 (or 99286666 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 43.

The square root of 2780026396 is about 52725.9556195997. The cubic root of 2780026396 is about 1406.1003181431.

The spelling of 2780026396 in words is "two billion, seven hundred eighty million, twenty-six thousand, three hundred ninety-six".