19883412 has 18 divisors (see below), whose sum is σ = 50260938. Its totient is φ = 6627792.

The previous prime is 19883399. The next prime is 19883419. The reversal of 19883412 is 21438891.

It can be written as a sum of positive squares in only one way, i.e., 19236996 + 646416 = 4386^2 + 804^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 552317 = 19883412 / (1 + 9 + 8 + 8 + 3 + 4 + 1 + 2).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19883419) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 276123 + ... + 276194.

Almost surely, 2^19883412 is an apocalyptic number.

19883412 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

19883412 is an abundant number, since it is smaller than the sum of its proper divisors (30377526).

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

19883412 is a wasteful number, since it uses less digits than its factorization.

19883412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 552327 (or 552322 counting only the distinct ones).

The product of its digits is 13824, while the sum is 36.

The square root of 19883412 is about 4459.0819682980. The cubic root of 19883412 is about 270.9132858913.

The spelling of 19883412 in words is "nineteen million, eight hundred eighty-three thousand, four hundred twelve".