19428534 has 24 divisors (see below), whose sum is σ = 42316560. Its totient is φ = 6442128.

The previous prime is 19428533. The next prime is 19428551. The reversal of 19428534 is 43582491.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19428533) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 807 + ... + 6285.

It is an arithmetic number, because the mean of its divisors is an integer number (1763190).

Almost surely, 2^19428534 is an apocalyptic number.

19428534 is an abundant number, since it is smaller than the sum of its proper divisors (22888026).

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

19428534 is a wasteful number, since it uses less digits than its factorization.

19428534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5684 (or 5681 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The square root of 19428534 is about 4407.7810744183. The cubic root of 19428534 is about 268.8314104185.

The spelling of 19428534 in words is "nineteen million, four hundred twenty-eight thousand, five hundred thirty-four".