2319894728 has 12 divisors (see below), whose sum is σ = 4350058065. Its totient is φ = 1159879248.

The previous prime is 2319894727. The next prime is 2319894743. The reversal of 2319894728 is 8274989132.

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 2 ways, for example, as 2088307204 + 231587524 = 45698^2 + 15218^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=34058.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2319894728.

It is not an unprimeable number, because it can be changed into a prime (2319894727) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 127718 + ... + 144746.

Almost surely, 2^2319894728 is an apocalyptic number.

It is an amenable number.

2319894728 is a deficient number, since it is larger than the sum of its proper divisors (2030163337).

2319894728 is an frugal number, since it uses more digits than its factorization.

2319894728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34064 (or 17031 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 53.

The square root of 2319894728 is about 48165.2855073029. The cubic root of 2319894728 is about 1323.8011661265.

The spelling of 2319894728 in words is "two billion, three hundred nineteen million, eight hundred ninety-four thousand, seven hundred twenty-eight".