12019810 has 32 divisors (see below), whose sum is σ = 23836032. Its totient is φ = 4327680.

The previous prime is 12019807. The next prime is 12019841. The reversal of 12019810 is 1891021.

12019810 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×12019810² = 288951664872200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11947 + ... + 12913.

It is an arithmetic number, because the mean of its divisors is an integer number (744876).

Almost surely, 2^12019810 is an apocalyptic number.

12019810 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12019810 is a deficient number, since it is larger than the sum of its proper divisors (11816222).

12019810 is a wasteful number, since it uses less digits than its factorization.

12019810 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1098.

The product of its (nonzero) digits is 144, while the sum is 22.

The square root of 12019810 is about 3466.9597632508. The cubic root of 12019810 is about 229.0687614109.

It can be divided in two parts, 1201 and 9810, that added together give a palindrome (11011).

The spelling of 12019810 in words is "twelve million, nineteen thousand, eight hundred ten".