2156026212 has 36 divisors (see below), whose sum is σ = 5539304316. Its totient is φ = 706893120.

The previous prime is 2156026153. The next prime is 2156026237. The reversal of 2156026212 is 2126206512.

It can be written as a sum of positive squares in 2 ways, for example, as 125081856 + 2030944356 = 11184^2 + 45066^2 .

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

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, 488703 + ... + 493094.

Almost surely, 2^2156026212 is an apocalyptic number.

It is an amenable number.

2156026212 is an abundant number, since it is smaller than the sum of its proper divisors (3383278104).

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

2156026212 is a wasteful number, since it uses less digits than its factorization.

2156026212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 981868 (or 981863 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 2156026212 is about 46433.0293218093. The cubic root of 2156026212 is about 1291.8676175198.

The spelling of 2156026212 in words is "two billion, one hundred fifty-six million, twenty-six thousand, two hundred twelve".