2788142444 has 12 divisors (see below), whose sum is σ = 4883721024. Its totient is φ = 1392793584.

The previous prime is 2788142431. The next prime is 2788142453. The reversal of 2788142444 is 4442418872.

It is a junction number, because it is equal to n+sod(n) for n = 2788142395 and 2788142404.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 314492 + ... + 323235.

It is an arithmetic number, because the mean of its divisors is an integer number (406976752).

Almost surely, 2^2788142444 is an apocalyptic number.

It is an amenable number.

2788142444 is a deficient number, since it is larger than the sum of its proper divisors (2095578580).

2788142444 is a wasteful number, since it uses less digits than its factorization.

2788142444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 638824 (or 638822 counting only the distinct ones).

The product of its digits is 458752, while the sum is 44.

The square root of 2788142444 is about 52802.8639753565. The cubic root of 2788142444 is about 1407.4673183796.

The spelling of 2788142444 in words is "two billion, seven hundred eighty-eight million, one hundred forty-two thousand, four hundred forty-four".