12640098 has 16 divisors (see below), whose sum is σ = 25329600. Its totient is φ = 4205136.

The previous prime is 12640097. The next prime is 12640099. The reversal of 12640098 is 89004621.

12640098 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (12640097) and next prime (12640099).

It is not an unprimeable number, because it can be changed into a prime (12640091) 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, 1836 + ... + 5352.

It is an arithmetic number, because the mean of its divisors is an integer number (1583100).

Almost surely, 2^12640098 is an apocalyptic number.

12640098 is an abundant number, since it is smaller than the sum of its proper divisors (12689502).

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

12640098 is a wasteful number, since it uses less digits than its factorization.

12640098 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4121.

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 12640098 is about 3555.2915492263. The cubic root of 12640098 is about 232.9432589150.

The spelling of 12640098 in words is "twelve million, six hundred forty thousand, ninety-eight".