7740140 has 12 divisors (see below), whose sum is σ = 16254336. Its totient is φ = 3096048.

The previous prime is 7740137. The next prime is 7740143. The reversal of 7740140 is 410477.

It is an interprime number because it is at equal distance from previous prime (7740137) and next prime (7740143).

It is not an unprimeable number, because it can be changed into a prime (7740143) 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 3 ways as a sum of consecutive naturals, for example, 193484 + ... + 193523.

It is an arithmetic number, because the mean of its divisors is an integer number (1354528).

Almost surely, 2^7740140 is an apocalyptic number.

It is an amenable number.

7740140 is an abundant number, since it is smaller than the sum of its proper divisors (8514196).

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

7740140 is a wasteful number, since it uses less digits than its factorization.

7740140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 387016 (or 387014 counting only the distinct ones).

The product of its (nonzero) digits is 784, while the sum is 23.

The square root of 7740140 is about 2782.1107095153. The cubic root of 7740140 is about 197.8106205424.

The spelling of 7740140 in words is "seven million, seven hundred forty thousand, one hundred forty".