2278120727828 has 24 divisors (see below), whose sum is σ = 4375182337344. Its totient is φ = 1029308763200.

The previous prime is 2278120727809. The next prime is 2278120727833. The reversal of 2278120727828 is 8287270218722.

It is a congruent number.

It is an unprimeable number.

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, 155009033 + ... + 155023728.

It is an arithmetic number, because the mean of its divisors is an integer number (182299264056).

Almost surely, 2^{2278120727828} is an apocalyptic number.

It is an amenable number.

2278120727828 is a deficient number, since it is larger than the sum of its proper divisors (2097061609516).

2278120727828 is a wasteful number, since it uses less digits than its factorization.

2278120727828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310032943 (or 310032941 counting only the distinct ones).

The product of its (nonzero) digits is 5619712, while the sum is 56.

The spelling of 2278120727828 in words is "two trillion, two hundred seventy-eight billion, one hundred twenty million, seven hundred twenty-seven thousand, eight hundred twenty-eight".