19741728 has 48 divisors (see below), whose sum is σ = 54081216. Its totient is φ = 6293760.

The previous prime is 19741723. The next prime is 19741781. The reversal of 19741728 is 82714791.

It is a tau number, because it is divible by the number of its divisors (48).

It is not an unprimeable number, because it can be changed into a prime (19741723) 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, 2263 + ... + 6678.

It is an arithmetic number, because the mean of its divisors is an integer number (1126692).

Almost surely, 2^19741728 is an apocalyptic number.

It is an amenable number.

19741728 is an abundant number, since it is smaller than the sum of its proper divisors (34339488).

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

19741728 is a wasteful number, since it uses less digits than its factorization.

19741728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8977 (or 8969 counting only the distinct ones).

The product of its digits is 28224, while the sum is 39.

The square root of 19741728 is about 4443.1664384761. The cubic root of 19741728 is about 270.2682656053.

The spelling of 19741728 in words is "nineteen million, seven hundred forty-one thousand, seven hundred twenty-eight".