19540828 has 12 divisors (see below), whose sum is σ = 34376832. Its totient is φ = 9718880.

The previous prime is 19540817. The next prime is 19540853. The reversal of 19540828 is 82804591.

It is a congruent number.

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, 12025 + ... + 13552.

It is an arithmetic number, because the mean of its divisors is an integer number (2864736).

Almost surely, 2^19540828 is an apocalyptic number.

It is an amenable number.

19540828 is a deficient number, since it is larger than the sum of its proper divisors (14836004).

19540828 is a wasteful number, since it uses less digits than its factorization.

19540828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25772 (or 25770 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 37.

The square root of 19540828 is about 4420.5008765976. The cubic root of 19540828 is about 269.3483507676.

The spelling of 19540828 in words is "nineteen million, five hundred forty thousand, eight hundred twenty-eight".