19227980 has 12 divisors (see below), whose sum is σ = 40378800. Its totient is φ = 7691184.

The previous prime is 19227979. The next prime is 19227983. The reversal of 19227980 is 8972291.

It is not an unprimeable number, because it can be changed into a prime (19227983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 480680 + ... + 480719.

It is an arithmetic number, because the mean of its divisors is an integer number (3364900).

Almost surely, 2^19227980 is an apocalyptic number.

19227980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19227980 is an abundant number, since it is smaller than the sum of its proper divisors (21150820).

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

19227980 is a wasteful number, since it uses less digits than its factorization.

19227980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 961408 (or 961406 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 38.

The square root of 19227980 is about 4384.9720637651. The cubic root of 19227980 is about 267.9031914397.

The spelling of 19227980 in words is "nineteen million, two hundred twenty-seven thousand, nine hundred eighty".