19105452 has 54 divisors (see below), whose sum is σ = 49572068. Its totient is φ = 6202944.

The previous prime is 19105451. The next prime is 19105477. The reversal of 19105452 is 25450191.

It is a super-2 number, since 2×19105452² = 730036592248608, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (19105451) 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 17 ways as a sum of consecutive naturals, for example, 214624 + ... + 214712.

Almost surely, 2^19105452 is an apocalyptic number.

19105452 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 19105452, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24786034).

19105452 is an abundant number, since it is smaller than the sum of its proper divisors (30466616).

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

19105452 is a wasteful number, since it uses less digits than its factorization.

19105452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255 (or 161 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 27.

The square root of 19105452 is about 4370.9783801799. The cubic root of 19105452 is about 267.3329180506.

The spelling of 19105452 in words is "nineteen million, one hundred five thousand, four hundred fifty-two".