2194241728 has 28 divisors (see below), whose sum is σ = 4976227792. Its totient is φ = 940389120.

The previous prime is 2194241681. The next prime is 2194241767. The reversal of 2194241728 is 8271424912.

It is a tau number, because it is divible by the number of its divisors (28).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2448483 + ... + 2449378.

Almost surely, 2^2194241728 is an apocalyptic number.

2194241728 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

2194241728 is an abundant number, since it is smaller than the sum of its proper divisors (2781986064).

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

2194241728 is an equidigital number, since it uses as much as digits as its factorization.

2194241728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4897880 (or 4897870 counting only the distinct ones).

The product of its digits is 64512, while the sum is 40.

The square root of 2194241728 is about 46842.7339936516. The cubic root of 2194241728 is about 1299.4557342965.

The spelling of 2194241728 in words is "two billion, one hundred ninety-four million, two hundred forty-one thousand, seven hundred twenty-eight".