19220224 has 18 divisors (see below), whose sum is σ = 38365880. Its totient is φ = 9609984.

The previous prime is 19220221. The next prime is 19220231. The reversal of 19220224 is 42202291.

It is a super-2 number, since 2×19220224² = 738834021220352, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 19220195 and 19220204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19220221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37284 + ... + 37795.

Almost surely, 2^19220224 is an apocalyptic number.

It is an amenable number.

19220224 is a deficient number, since it is larger than the sum of its proper divisors (19145656).

19220224 is an frugal number, since it uses more digits than its factorization.

19220224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75095 (or 75081 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 19220224 is about 4384.0875903659. The cubic root of 19220224 is about 267.8671651801.

The spelling of 19220224 in words is "nineteen million, two hundred twenty thousand, two hundred twenty-four".