19452642 has 32 divisors (see below), whose sum is σ = 43352064. Its totient is φ = 5768400.

The previous prime is 19452623. The next prime is 19452647. The reversal of 19452642 is 24625491.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (19452647) 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 15 ways as a sum of consecutive naturals, for example, 34 + ... + 6237.

It is an arithmetic number, because the mean of its divisors is an integer number (1354752).

Almost surely, 2^19452642 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19452642, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21676032).

19452642 is an abundant number, since it is smaller than the sum of its proper divisors (23899422).

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

19452642 is a wasteful number, since it uses less digits than its factorization.

19452642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6334.

The product of its digits is 17280, while the sum is 33.

The square root of 19452642 is about 4410.5149359230. The cubic root of 19452642 is about 268.9425580881.

The spelling of 19452642 in words is "nineteen million, four hundred fifty-two thousand, six hundred forty-two".