19432428 has 24 divisors (see below), whose sum is σ = 48010032. Its totient is φ = 6096384.

The previous prime is 19432423. The next prime is 19432429. The reversal of 19432428 is 82423491.

It is not an unprimeable number, because it can be changed into a prime (19432423) 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 7 ways as a sum of consecutive naturals, for example, 47425 + ... + 47832.

It is an arithmetic number, because the mean of its divisors is an integer number (2000418).

Almost surely, 2^19432428 is an apocalyptic number.

It is an amenable number.

19432428 is an abundant number, since it is smaller than the sum of its proper divisors (28577604).

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

19432428 is a wasteful number, since it uses less digits than its factorization.

19432428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95281 (or 95279 counting only the distinct ones).

The product of its digits is 13824, while the sum is 33.

The square root of 19432428 is about 4408.2227711403. Note that the first 3 decimals coincide. The cubic root of 19432428 is about 268.8493695636.

It can be divided in two parts, 1943 and 2428, that added together give a triangular number (4371 = T₉₃).

The spelling of 19432428 in words is "nineteen million, four hundred thirty-two thousand, four hundred twenty-eight".