2156202030 has 64 divisors (see below), whose sum is σ = 5235310080. Its totient is φ = 568301184.

The previous prime is 2156202017. The next prime is 2156202031. The reversal of 2156202030 is 302026512.

It is a super-2 number, since 2×2156202030² = 9298414388352241800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2156201988 and 2156202006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2156202031) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2376837 + ... + 2377743.

It is an arithmetic number, because the mean of its divisors is an integer number (81801720).

Almost surely, 2^2156202030 is an apocalyptic number.

2156202030 is an abundant number, since it is smaller than the sum of its proper divisors (3079108050).

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

2156202030 is a wasteful number, since it uses less digits than its factorization.

2156202030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1753.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 2156202030 is about 46434.9225260471. The cubic root of 2156202030 is about 1291.9027326475.

Adding to 2156202030 its reverse (302026512), we get a palindrome (2458228542).

The spelling of 2156202030 in words is "two billion, one hundred fifty-six million, two hundred two thousand, thirty".