12197040 has 40 divisors (see below), whose sum is σ = 37811568. Its totient is φ = 3252480.

The previous prime is 12197039. The next prime is 12197051. The reversal of 12197040 is 4079121.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 12197040.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 25171 + ... + 25650.

Almost surely, 2^12197040 is an apocalyptic number.

12197040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12197040 is an abundant number, since it is smaller than the sum of its proper divisors (25614528).

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

12197040 is a wasteful number, since it uses less digits than its factorization.

12197040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50837 (or 50831 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 24.

The square root of 12197040 is about 3492.4260908429. The cubic root of 12197040 is about 230.1891323957.

The spelling of 12197040 in words is "twelve million, one hundred ninety-seven thousand, forty".