19984026 has 16 divisors (see below), whose sum is σ = 41257728. Its totient is φ = 6446400.

The previous prime is 19984001. The next prime is 19984031. The reversal of 19984026 is 62048991.

It is a super-2 number, since 2×19984026² = 798722590337352, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53535 + ... + 53906.

It is an arithmetic number, because the mean of its divisors is an integer number (2578608).

Almost surely, 2^19984026 is an apocalyptic number.

19984026 is an abundant number, since it is smaller than the sum of its proper divisors (21273702).

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

19984026 is a wasteful number, since it uses less digits than its factorization.

19984026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107477.

The product of its (nonzero) digits is 31104, while the sum is 39.

The square root of 19984026 is about 4470.3496507544. The cubic root of 19984026 is about 271.3694755661.

The spelling of 19984026 in words is "nineteen million, nine hundred eighty-four thousand, twenty-six".