2788145826 has 16 divisors (see below), whose sum is σ = 5904309024. Its totient is φ = 874712384.

The previous prime is 2788145791. The next prime is 2788145827. The reversal of 2788145826 is 6285418872.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is not an unprimeable number, because it can be changed into a prime (2788145827) 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 7 ways as a sum of consecutive naturals, for example, 13667280 + ... + 13667483.

It is an arithmetic number, because the mean of its divisors is an integer number (369019314).

Almost surely, 2^2788145826 is an apocalyptic number.

2788145826 is an abundant number, since it is smaller than the sum of its proper divisors (3116163198).

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

2788145826 is a wasteful number, since it uses less digits than its factorization.

2788145826 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27334785.

The product of its digits is 1720320, while the sum is 51.

The square root of 2788145826 is about 52802.8960001248. The cubic root of 2788145826 is about 1407.4678874625.

The spelling of 2788145826 in words is "two billion, seven hundred eighty-eight million, one hundred forty-five thousand, eight hundred twenty-six".