9640140 has 24 divisors (see below), whose sum is σ = 26992560. Its totient is φ = 2570688.

The previous prime is 9640129. The next prime is 9640171. The reversal of 9640140 is 410469.

It is a nialpdrome in base 15.

It is a self number, because there is not a number n which added to its sum of digits gives 9640140.

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, 80275 + ... + 80394.

It is an arithmetic number, because the mean of its divisors is an integer number (1124690).

Almost surely, 2^9640140 is an apocalyptic number.

It is an amenable number.

9640140 is an abundant number, since it is smaller than the sum of its proper divisors (17352420).

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

9640140 is a wasteful number, since it uses less digits than its factorization.

9640140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160681 (or 160679 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 9640140 is about 3104.8574846521. The cubic root of 9640140 is about 212.8275180179.

The spelling of 9640140 in words is "nine million, six hundred forty thousand, one hundred forty".