12057840 has 60 divisors (see below), whose sum is σ = 40496664. Its totient is φ = 3215232.

The previous prime is 12057839. The next prime is 12057841. The reversal of 12057840 is 4875021.

It is an interprime number because it is at equal distance from previous prime (12057839) and next prime (12057841).

It is a tau number, because it is divible by the number of its divisors (60).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12057841) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7654 + ... + 9093.

Almost surely, 2^12057840 is an apocalyptic number.

12057840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12057840 is an abundant number, since it is smaller than the sum of its proper divisors (28438824).

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

12057840 is a wasteful number, since it uses less digits than its factorization.

12057840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16766 (or 16757 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 27.

The square root of 12057840 is about 3472.4400642776. The cubic root of 12057840 is about 229.3100939434.

It can be divided in two parts, 1205 and 7840, that added together give a triangular number (9045 = T₁₃₄).

The spelling of 12057840 in words is "twelve million, fifty-seven thousand, eight hundred forty".