2056139028 has 36 divisors (see below), whose sum is σ = 5295532788. Its totient is φ = 672447360.

The previous prime is 2056139009. The next prime is 2056139087. The reversal of 2056139028 is 8209316502.

2056139028 is a `hidden beast` number, since 2 + 0 + 561 + 3 + 90 + 2 + 8 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1462144644 + 593994384 = 38238^2 + 24372^2 .

It is a tau number, because it is divible by the number of its divisors (36).

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

It is a junction number, because it is equal to n+sod(n) for n = 2056138983 and 2056139001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 536913 + ... + 540728.

It is an arithmetic number, because the mean of its divisors is an integer number (147098133).

Almost surely, 2^2056139028 is an apocalyptic number.

It is an amenable number.

2056139028 is an abundant number, since it is smaller than the sum of its proper divisors (3239393760).

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

2056139028 is a wasteful number, since it uses less digits than its factorization.

2056139028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1077704 (or 1077699 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 2056139028 is about 45344.6692346520. The cubic root of 2056139028 is about 1271.6008968029.

The spelling of 2056139028 in words is "two billion, fifty-six million, one hundred thirty-nine thousand, twenty-eight".