19149072 has 80 divisors (see below), whose sum is σ = 54139392. Its totient is φ = 5806080.

The previous prime is 19149037. The next prime is 19149073. The reversal of 19149072 is 27094191.

It is a super-2 number, since 2×19149072² = 733373916922368, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19149073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24918 + ... + 25674.

Almost surely, 2^19149072 is an apocalyptic number.

19149072 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19149072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27069696).

19149072 is an abundant number, since it is smaller than the sum of its proper divisors (34990320).

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

19149072 is a wasteful number, since it uses less digits than its factorization.

19149072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 816 (or 810 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 33.

The square root of 19149072 is about 4375.9652649444. The cubic root of 19149072 is about 267.5362142720.

The spelling of 19149072 in words is "nineteen million, one hundred forty-nine thousand, seventy-two".