19228212 has 24 divisors (see below), whose sum is σ = 49851200. Its totient is φ = 6409368.

The previous prime is 19228211. The next prime is 19228229. The reversal of 19228212 is 21282291.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a zygodrome in base 3.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19228211) 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 7 ways as a sum of consecutive naturals, for example, 88912 + ... + 89127.

Almost surely, 2^19228212 is an apocalyptic number.

19228212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

19228212 is an abundant number, since it is smaller than the sum of its proper divisors (30622988).

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

19228212 is a wasteful number, since it uses less digits than its factorization.

19228212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178052 (or 178044 counting only the distinct ones).

The product of its digits is 1152, while the sum is 27.

The square root of 19228212 is about 4384.9985176736. The cubic root of 19228212 is about 267.9042689197.

The spelling of 19228212 in words is "nineteen million, two hundred twenty-eight thousand, two hundred twelve".