19228880 has 40 divisors (see below), whose sum is σ = 48773664. Its totient is φ = 6992000.

The previous prime is 19228879. The next prime is 19228907. The reversal of 19228880 is 8882291.

It is a tau number, because it is divible by the number of its divisors (40).

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, 10046 + ... + 11805.

Almost surely, 2^19228880 is an apocalyptic number.

19228880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19228880 is an abundant number, since it is smaller than the sum of its proper divisors (29544784).

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

19228880 is a wasteful number, since it uses less digits than its factorization.

19228880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21875 (or 21869 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 38.

The square root of 19228880 is about 4385.0746857950. The cubic root of 19228880 is about 267.9073712706.

The spelling of 19228880 in words is "nineteen million, two hundred twenty-eight thousand, eight hundred eighty".