1923427728 has 40 divisors (see below), whose sum is σ = 5520951200. Its totient is φ = 641142432.

The previous prime is 1923427699. The next prime is 1923427729. The reversal of 1923427728 is 8277243291.

It is not an unprimeable number, because it can be changed into a prime (1923427729) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2225758 + ... + 2226621.

It is an arithmetic number, because the mean of its divisors is an integer number (138023780).

Almost surely, 2^1923427728 is an apocalyptic number.

1923427728 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1923427728 is an abundant number, since it is smaller than the sum of its proper divisors (3597523472).

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

1923427728 is a wasteful number, since it uses less digits than its factorization.

1923427728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4452396 (or 4452384 counting only the distinct ones).

The product of its digits is 338688, while the sum is 45.

The square root of 1923427728 is about 43856.9005744820. The cubic root of 1923427728 is about 1243.6321979351.

The spelling of 1923427728 in words is "one billion, nine hundred twenty-three million, four hundred twenty-seven thousand, seven hundred twenty-eight".