19942464 has 28 divisors (see below), whose sum is σ = 52764944. Its totient is φ = 6647424.

The previous prime is 19942463. The next prime is 19942487. The reversal of 19942464 is 46424991.

It is not an unprimeable number, because it can be changed into a prime (19942463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51742 + ... + 52125.

Almost surely, 2^19942464 is an apocalyptic number.

It is an amenable number.

19942464 is an abundant number, since it is smaller than the sum of its proper divisors (32822480).

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

19942464 is a wasteful number, since it uses less digits than its factorization.

19942464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103882 (or 103872 counting only the distinct ones).

The product of its digits is 62208, while the sum is 39.

The square root of 19942464 is about 4465.6986015628. The cubic root of 19942464 is about 271.1812171014.

The spelling of 19942464 in words is "nineteen million, nine hundred forty-two thousand, four hundred sixty-four".