19242564 has 24 divisors (see below), whose sum is σ = 48981408. Its totient is φ = 5831040.

The previous prime is 19242557. The next prime is 19242577. The reversal of 19242564 is 46524291.

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

It is an unprimeable number.

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, 72757 + ... + 73020.

It is an arithmetic number, because the mean of its divisors is an integer number (2040892).

Almost surely, 2^19242564 is an apocalyptic number.

It is an amenable number.

19242564 is an abundant number, since it is smaller than the sum of its proper divisors (29738844).

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

19242564 is a wasteful number, since it uses less digits than its factorization.

19242564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145795 (or 145793 counting only the distinct ones).

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

The square root of 19242564 is about 4386.6347009980. The cubic root of 19242564 is about 267.9709072154.

The spelling of 19242564 in words is "nineteen million, two hundred forty-two thousand, five hundred sixty-four".