2777889492 has 336 divisors, whose sum is σ = 8925595392. Its totient is φ = 739031040.

The previous prime is 2777889487. The next prime is 2777889493. The reversal of 2777889492 is 2949887772.

2777889492 is a `hidden beast` number, since 2 + 77 + 78 + 8 + 9 + 492 = 666.

2777889492 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2777889493) by changing a digit.

It is a polite number, since it can be written in 111 ways as a sum of consecutive naturals, for example, 28637988 + ... + 28638084.

It is an arithmetic number, because the mean of its divisors is an integer number (26564272).

Almost surely, 2^2777889492 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2777889492, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4462797696).

2777889492 is an abundant number, since it is smaller than the sum of its proper divisors (6147705900).

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

2777889492 is a wasteful number, since it uses less digits than its factorization.

2777889492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210 (or 193 counting only the distinct ones).

The product of its digits is 28449792, while the sum is 63.

The square root of 2777889492 is about 52705.6874729853. The cubic root of 2777889492 is about 1405.7399532685.

The spelling of 2777889492 in words is "two billion, seven hundred seventy-seven million, eight hundred eighty-nine thousand, four hundred ninety-two".