12640462 has 16 divisors (see below), whose sum is σ = 20036160. Its totient is φ = 5971168.

The previous prime is 12640451. The next prime is 12640477. The reversal of 12640462 is 26404621.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 408 + ... + 5044.

It is an arithmetic number, because the mean of its divisors is an integer number (1252260).

Almost surely, 2^12640462 is an apocalyptic number.

12640462 is a deficient number, since it is larger than the sum of its proper divisors (7395698).

12640462 is a wasteful number, since it uses less digits than its factorization.

12640462 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4715.

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 12640462 is about 3555.3427401588. The cubic root of 12640462 is about 232.9454949350.

The spelling of 12640462 in words is "twelve million, six hundred forty thousand, four hundred sixty-two".