12020619 has 16 divisors (see below), whose sum is σ = 17360672. Its totient is φ = 7354368.

The previous prime is 12020611. The next prime is 12020623. The reversal of 12020619 is 91602021.

It is not a de Polignac number, because 12020619 - 2³ = 12020611 is a prime.

It is a super-2 number, since 2×12020619² = 288990562286322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12020595 and 12020604.

It is not an unprimeable number, because it can be changed into a prime (12020611) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6729 + ... + 8325.

It is an arithmetic number, because the mean of its divisors is an integer number (1085042).

Almost surely, 2^12020619 is an apocalyptic number.

12020619 is a deficient number, since it is larger than the sum of its proper divisors (5340053).

12020619 is a wasteful number, since it uses less digits than its factorization.

12020619 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1806.

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

The square root of 12020619 is about 3467.0764341156. The cubic root of 12020619 is about 229.0739004958.

The spelling of 12020619 in words is "twelve million, twenty thousand, six hundred nineteen".