2057347782 has 64 divisors (see below), whose sum is σ = 5258442240. Its totient is φ = 584052768.

The previous prime is 2057347751. The next prime is 2057347811. The reversal of 2057347782 is 2877437502.

2057347782 is a `hidden beast` number, since 2 + 0 + 573 + 4 + 7 + 78 + 2 = 666.

It is a super-2 number, since 2×2057347782² = 8465359792200639048, which contains 22 as substring.

It is a congruent number.

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, 42013 + ... + 76679.

It is an arithmetic number, because the mean of its divisors is an integer number (82163160).

Almost surely, 2^2057347782 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2057347782, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2629221120).

2057347782 is an abundant number, since it is smaller than the sum of its proper divisors (3201094458).

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

2057347782 is a wasteful number, since it uses less digits than its factorization.

2057347782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34842 (or 34836 counting only the distinct ones).

The product of its (nonzero) digits is 658560, while the sum is 45.

The square root of 2057347782 is about 45357.9957890558. The cubic root of 2057347782 is about 1271.8500290437.

The spelling of 2057347782 in words is "two billion, fifty-seven million, three hundred forty-seven thousand, seven hundred eighty-two".