20019612 has 12 divisors (see below), whose sum is σ = 46712456. Its totient is φ = 6673200.

The previous prime is 20019607. The next prime is 20019617. The reversal of 20019612 is 21691002.

It is an interprime number because it is at equal distance from previous prime (20019607) and next prime (20019617).

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20019617) 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 3 ways as a sum of consecutive naturals, for example, 834139 + ... + 834162.

Almost surely, 2^20019612 is an apocalyptic number.

It is an amenable number.

20019612 is an abundant number, since it is smaller than the sum of its proper divisors (26692844).

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

20019612 is a wasteful number, since it uses less digits than its factorization.

20019612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1668308 (or 1668306 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 21.

The square root of 20019612 is about 4474.3281059842. The cubic root of 20019612 is about 271.5304579378.

The spelling of 20019612 in words is "twenty million, nineteen thousand, six hundred twelve".