7940740 has 12 divisors (see below), whose sum is σ = 16675596. Its totient is φ = 3176288.

The previous prime is 7940719. The next prime is 7940747. The reversal of 7940740 is 470497.

It can be written as a sum of positive squares in 2 ways, for example, as 4562496 + 3378244 = 2136^2 + 1838^2 .

It is not an unprimeable number, because it can be changed into a prime (7940747) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 198499 + ... + 198538.

It is an arithmetic number, because the mean of its divisors is an integer number (1389633).

Almost surely, 2^7940740 is an apocalyptic number.

It is an amenable number.

7940740 is an abundant number, since it is smaller than the sum of its proper divisors (8734856).

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

7940740 is a wasteful number, since it uses less digits than its factorization.

7940740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 397046 (or 397044 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 31.

The square root of 7940740 is about 2817.9318657484. The cubic root of 7940740 is about 199.5049422670.

The spelling of 7940740 in words is "seven million, nine hundred forty thousand, seven hundred forty".