340638125 has 20 divisors (see below), whose sum is σ = 431112000. Its totient is φ = 269022000.

The previous prime is 340638113. The next prime is 340638143. The reversal of 340638125 is 521836043.

It is a de Polignac number, because none of the positive numbers 2^k-340638125 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 340638091 and 340638100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 45926 + ... + 52824.

It is an arithmetic number, because the mean of its divisors is an integer number (21555600).

Almost surely, 2^340638125 is an apocalyptic number.

It is an amenable number.

340638125 is a deficient number, since it is larger than the sum of its proper divisors (90473875).

340638125 is an frugal number, since it uses more digits than its factorization.

340638125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6998 (or 6983 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 340638125 is about 18456.3843967338. The cubic root of 340638125 is about 698.3895802229.

The spelling of 340638125 in words is "three hundred forty million, six hundred thirty-eight thousand, one hundred twenty-five".