12554440 has 32 divisors (see below), whose sum is σ = 29736000. Its totient is φ = 4757184.

The previous prime is 12554387. The next prime is 12554447. The reversal of 12554440 is 4445521.

It is a happy number.

12554440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×12554440² = 315227927427200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12554447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7500 + ... + 9019.

It is an arithmetic number, because the mean of its divisors is an integer number (929250).

Almost surely, 2^12554440 is an apocalyptic number.

12554440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12554440 is an abundant number, since it is smaller than the sum of its proper divisors (17181560).

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

12554440 is a wasteful number, since it uses less digits than its factorization.

12554440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16549 (or 16545 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 25.

The square root of 12554440 is about 3543.2245201229. The cubic root of 12554440 is about 232.4158712078.

Adding to 12554440 its reverse (4445521), we get a palindrome (16999961).

The spelling of 12554440 in words is "twelve million, five hundred fifty-four thousand, four hundred forty".