12169540 has 24 divisors (see below), whose sum is σ = 25623360. Its totient is φ = 4855008.

The previous prime is 12169513. The next prime is 12169567. The reversal of 12169540 is 4596121.

It is an interprime number because it is at equal distance from previous prime (12169513) and next prime (12169567).

It is a junction number, because it is equal to n+sod(n) for n = 12169499 and 12169508.

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, 11889 + ... + 12871.

It is an arithmetic number, because the mean of its divisors is an integer number (1067640).

Almost surely, 2^12169540 is an apocalyptic number.

12169540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12169540 is an abundant number, since it is smaller than the sum of its proper divisors (13453820).

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

12169540 is a wasteful number, since it uses less digits than its factorization.

12169540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1611 (or 1609 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 12169540 is about 3488.4867779598. The cubic root of 12169540 is about 230.0160039273.

The spelling of 12169540 in words is "twelve million, one hundred sixty-nine thousand, five hundred forty".