840226780 has 24 divisors (see below), whose sum is σ = 1789331040. Its totient is φ = 331356480.

The previous prime is 840226771. The next prime is 840226781. The reversal of 840226780 is 87622048.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (840226781) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 294435 + ... + 297274.

It is an arithmetic number, because the mean of its divisors is an integer number (74555460).

Almost surely, 2^840226780 is an apocalyptic number.

It is an amenable number.

840226780 is an abundant number, since it is smaller than the sum of its proper divisors (949104260).

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

840226780 is a wasteful number, since it uses less digits than its factorization.

840226780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 591789 (or 591787 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 37.

The square root of 840226780 is about 28986.6655550444. The cubic root of 840226780 is about 943.6236994264.

The spelling of 840226780 in words is "eight hundred forty million, two hundred twenty-six thousand, seven hundred eighty".