12019904 has 28 divisors (see below), whose sum is σ = 25688544. Its totient is φ = 5547264.

The previous prime is 12019897. The next prime is 12019907. The reversal of 12019904 is 40991021.

It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12019907) by changing a digit.

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, 6392 + ... + 8055.

It is an arithmetic number, because the mean of its divisors is an integer number (917448).

Almost surely, 2^12019904 is an apocalyptic number.

It is an amenable number.

12019904 is an abundant number, since it is smaller than the sum of its proper divisors (13668640).

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

12019904 is a wasteful number, since it uses less digits than its factorization.

12019904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14472 (or 14462 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 26.

The square root of 12019904 is about 3466.9733197704. The cubic root of 12019904 is about 229.0693585476.

The spelling of 12019904 in words is "twelve million, nineteen thousand, nine hundred four".