19097428 has 36 divisors (see below), whose sum is σ = 39606112. Its totient is φ = 7892640.

The previous prime is 19097417. The next prime is 19097459. The reversal of 19097428 is 82479091.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23143 + ... + 23953.

Almost surely, 2^19097428 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19097428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19803056).

19097428 is an abundant number, since it is smaller than the sum of its proper divisors (20508684).

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

19097428 is a wasteful number, since it uses less digits than its factorization.

19097428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 880 (or 849 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 40.

The square root of 19097428 is about 4370.0604114817. The cubic root of 19097428 is about 267.2954875533.

The spelling of 19097428 in words is "nineteen million, ninety-seven thousand, four hundred twenty-eight".