19424870 has 8 divisors (see below), whose sum is σ = 34964784. Its totient is φ = 7769944.

The previous prime is 19424869. The next prime is 19424953. The reversal of 19424870 is 7842491.

19424870 = 976² + 977² + ... + 995².

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 19424870.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 971234 + ... + 971253.

It is an arithmetic number, because the mean of its divisors is an integer number (4370598).

Almost surely, 2^19424870 is an apocalyptic number.

19424870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19424870 is a deficient number, since it is larger than the sum of its proper divisors (15539914).

19424870 is a wasteful number, since it uses less digits than its factorization.

19424870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1942494.

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 19424870 is about 4407.3654261928. The cubic root of 19424870 is about 268.8145098430.

The spelling of 19424870 in words is "nineteen million, four hundred twenty-four thousand, eight hundred seventy".