2156346304 has 56 divisors (see below), whose sum is σ = 4900745088. Its totient is φ = 922172160.

The previous prime is 2156346293. The next prime is 2156346319. The reversal of 2156346304 is 4036436512.

It is a tau number, because it is divible by the number of its divisors (56).

It is a self number, because there is not a number n which added to its sum of digits gives 2156346304.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 215067 + ... + 224869.

Almost surely, 2^2156346304 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2156346304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2450372544).

2156346304 is an abundant number, since it is smaller than the sum of its proper divisors (2744398784).

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

2156346304 is an equidigital number, since it uses as much as digits as its factorization.

2156346304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10313 (or 10303 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 34.

The square root of 2156346304 is about 46436.4760075525. The cubic root of 2156346304 is about 1291.9315462459.

The spelling of 2156346304 in words is "two billion, one hundred fifty-six million, three hundred forty-six thousand, three hundred four".