12754638 has 32 divisors (see below), whose sum is σ = 30525600. Its totient is φ = 3924288.

The previous prime is 12754631. The next prime is 12754639. The reversal of 12754638 is 83645721.

12754638 is a `hidden beast` number, since 12 + 7 + 5 + 4 + 638 = 666.

It is a super-2 number, since 2×12754638² = 325361581022088, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12754631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8383 + ... + 9786.

It is an arithmetic number, because the mean of its divisors is an integer number (953925).

Almost surely, 2^12754638 is an apocalyptic number.

12754638 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

12754638 is an abundant number, since it is smaller than the sum of its proper divisors (17770962).

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

12754638 is a wasteful number, since it uses less digits than its factorization.

12754638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18193 (or 18187 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 12754638 is about 3571.3636051234. The cubic root of 12754638 is about 233.6447601217.

The spelling of 12754638 in words is "twelve million, seven hundred fifty-four thousand, six hundred thirty-eight".