12640054 has 48 divisors (see below), whose sum is σ = 23810976. Its totient is φ = 4924800.

The previous prime is 12640037. The next prime is 12640091. The reversal of 12640054 is 45004621.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 207184 + ... + 207244.

It is an arithmetic number, because the mean of its divisors is an integer number (496062).

Almost surely, 2^12640054 is an apocalyptic number.

12640054 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

12640054 is a deficient number, since it is larger than the sum of its proper divisors (11170922).

12640054 is a wasteful number, since it uses less digits than its factorization.

12640054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149 (or 130 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 12640054 is about 3555.2853612615. The cubic root of 12640054 is about 232.9429886240.

Adding to 12640054 its reverse (45004621), we get a palindrome (57644675).

The spelling of 12640054 in words is "twelve million, six hundred forty thousand, fifty-four".