2778234120 has 128 divisors (see below), whose sum is σ = 9272361600. Its totient is φ = 739936512.

The previous prime is 2778234113. The next prime is 2778234139. The reversal of 2778234120 is 214328772.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1611579 + ... + 1613301.

It is an arithmetic number, because the mean of its divisors is an integer number (72440325).

Almost surely, 2^2778234120 is an apocalyptic number.

2778234120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2778234120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4636180800).

2778234120 is an abundant number, since it is smaller than the sum of its proper divisors (6494127480).

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

2778234120 is a wasteful number, since it uses less digits than its factorization.

2778234120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3236 (or 3226 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 36.

The square root of 2778234120 is about 52708.9567341263. The cubic root of 2778234120 is about 1405.7980834085.

The spelling of 2778234120 in words is "two billion, seven hundred seventy-eight million, two hundred thirty-four thousand, one hundred twenty".