12578040 has 48 divisors (see below), whose sum is σ = 40879800. Its totient is φ = 3354048.

The previous prime is 12578029. The next prime is 12578047. The reversal of 12578040 is 4087521.

It is a junction number, because it is equal to n+sod(n) for n = 12577995 and 12578013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12578047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17110 + ... + 17829.

Almost surely, 2^12578040 is an apocalyptic number.

12578040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12578040 is an abundant number, since it is smaller than the sum of its proper divisors (28301760).

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

12578040 is a wasteful number, since it uses less digits than its factorization.

12578040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34956 (or 34949 counting only the distinct ones).

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

The square root of 12578040 is about 3546.5532563321. The cubic root of 12578040 is about 232.5614128438.

The spelling of 12578040 in words is "twelve million, five hundred seventy-eight thousand, forty".