19122272 has 48 divisors (see below), whose sum is σ = 41524560. Its totient is φ = 8612352.

The previous prime is 19122211. The next prime is 19122283. The reversal of 19122272 is 27222191.

It is a super-2 number, since 2×19122272² = 731322572883968, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (26).

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, 17354 + ... + 18422.

It is an arithmetic number, because the mean of its divisors is an integer number (865095).

Almost surely, 2^19122272 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19122272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20762280).

19122272 is an abundant number, since it is smaller than the sum of its proper divisors (22402288).

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

19122272 is a wasteful number, since it uses less digits than its factorization.

19122272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1135 (or 1127 counting only the distinct ones).

The product of its digits is 1008, while the sum is 26.

The square root of 19122272 is about 4372.9020112507. The cubic root of 19122272 is about 267.4113462880.

The spelling of 19122272 in words is "nineteen million, one hundred twenty-two thousand, two hundred seventy-two".