2051115228 has 36 divisors (see below), whose sum is σ = 5222621040. Its totient is φ = 678712896.

The previous prime is 2051115223. The next prime is 2051115257. The reversal of 2051115228 is 8225111502.

It is a happy number.

2051115228 is a `hidden beast` number, since 20 + 5 + 111 + 522 + 8 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2051115221) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 203008 + ... + 212871.

Almost surely, 2^2051115228 is an apocalyptic number.

It is an amenable number.

2051115228 is an abundant number, since it is smaller than the sum of its proper divisors (3171505812).

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

2051115228 is a wasteful number, since it uses less digits than its factorization.

2051115228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 416026 (or 416021 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 27.

The square root of 2051115228 is about 45289.2396491705. The cubic root of 2051115228 is about 1270.5644107113.

The spelling of 2051115228 in words is "two billion, fifty-one million, one hundred fifteen thousand, two hundred twenty-eight".