6129640 has 32 divisors (see below), whose sum is σ = 15046560. Its totient is φ = 2228800.

The previous prime is 6129637. The next prime is 6129649. The reversal of 6129640 is 469216.

It is a junction number, because it is equal to n+sod(n) for n = 6129599 and 6129608.

It is not an unprimeable number, because it can be changed into a prime (6129649) 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 7 ways as a sum of consecutive naturals, for example, 6526 + ... + 7405.

It is an arithmetic number, because the mean of its divisors is an integer number (470205).

Almost surely, 2^6129640 is an apocalyptic number.

It is an amenable number.

6129640 is an abundant number, since it is smaller than the sum of its proper divisors (8916920).

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

6129640 is a wasteful number, since it uses less digits than its factorization.

6129640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13953 (or 13949 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 6129640 is about 2475.8109782453. The cubic root of 6129640 is about 183.0114756855.

The spelling of 6129640 in words is "six million, one hundred twenty-nine thousand, six hundred forty".