19798428 has 24 divisors (see below), whose sum is σ = 49750288. Its totient is φ = 6091776.

The previous prime is 19798409. The next prime is 19798439. The reversal of 19798428 is 82489791.

It is a super-3 number, since 3×19798428³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63301 + ... + 63612.

Almost surely, 2^19798428 is an apocalyptic number.

It is an amenable number.

19798428 is an abundant number, since it is smaller than the sum of its proper divisors (29951860).

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

19798428 is a wasteful number, since it uses less digits than its factorization.

19798428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126933 (or 126931 counting only the distinct ones).

The product of its digits is 290304, while the sum is 48.

The square root of 19798428 is about 4449.5424483872. The cubic root of 19798428 is about 270.5267631254.

The spelling of 19798428 in words is "nineteen million, seven hundred ninety-eight thousand, four hundred twenty-eight".