2347221128 has 36 divisors (see below), whose sum is σ = 5121669735. Its totient is φ = 1005540816.

The previous prime is 2347221103. The next prime is 2347221157. The reversal of 2347221128 is 8211227432.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in only one way, i.e., 1173610564 + 1173610564 = 34258^2 + 34258^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=34258.

It is a junction number, because it is equal to n+sod(n) for n = 2347221094 and 2347221103.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 958001 + ... + 960447.

Almost surely, 2^2347221128 is an apocalyptic number.

2347221128 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

2347221128 is an abundant number, since it is smaller than the sum of its proper divisors (2774448607).

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

2347221128 is an frugal number, since it uses more digits than its factorization.

2347221128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4914 (or 2456 counting only the distinct ones).

The product of its digits is 10752, while the sum is 32.

The square root of 2347221128 is about 48448.1282197775. The cubic root of 2347221128 is about 1328.9786433791.

Multiplying 2347221128 by its sum of digits (32), we get a square (75111076096 = 274064²).

The spelling of 2347221128 in words is "two billion, three hundred forty-seven million, two hundred twenty-one thousand, one hundred twenty-eight".