19424940 has 48 divisors (see below), whose sum is σ = 54589920. Its totient is φ = 5160960.

The previous prime is 19424869. The next prime is 19424953. The reversal of 19424940 is 4942491.

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 15 ways as a sum of consecutive naturals, for example, 24876 + ... + 25644.

It is an arithmetic number, because the mean of its divisors is an integer number (1137290).

Almost surely, 2^19424940 is an apocalyptic number.

19424940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19424940 is an abundant number, since it is smaller than the sum of its proper divisors (35164980).

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

19424940 is a wasteful number, since it uses less digits than its factorization.

19424940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1202 (or 1200 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 19424940 is about 4407.3733674378. The cubic root of 19424940 is about 268.8148327451.

The spelling of 19424940 in words is "nineteen million, four hundred twenty-four thousand, nine hundred forty".