12047540 has 12 divisors (see below), whose sum is σ = 25299876. Its totient is φ = 4819008.

The previous prime is 12047531. The next prime is 12047549. The reversal of 12047540 is 4574021.

It is an interprime number because it is at equal distance from previous prime (12047531) and next prime (12047549).

It can be written as a sum of positive squares in 2 ways, for example, as 6421156 + 5626384 = 2534^2 + 2372^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12047549) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 301169 + ... + 301208.

It is an arithmetic number, because the mean of its divisors is an integer number (2108323).

Almost surely, 2^12047540 is an apocalyptic number.

12047540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12047540 is an abundant number, since it is smaller than the sum of its proper divisors (13252336).

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

12047540 is a wasteful number, since it uses less digits than its factorization.

12047540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 602386 (or 602384 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 23.

The square root of 12047540 is about 3470.9566404667. The cubic root of 12047540 is about 229.2447818917.

The spelling of 12047540 in words is "twelve million, forty-seven thousand, five hundred forty".