7725940 has 12 divisors (see below), whose sum is σ = 16224516. Its totient is φ = 3090368.

The previous prime is 7725937. The next prime is 7725947. The reversal of 7725940 is 495277.

It can be written as a sum of positive squares in 2 ways, for example, as 5588496 + 2137444 = 2364^2 + 1462^2 .

It is a junction number, because it is equal to n+sod(n) for n = 7725896 and 7725905.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7725947) 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, 193129 + ... + 193168.

It is an arithmetic number, because the mean of its divisors is an integer number (1352043).

Almost surely, 2^7725940 is an apocalyptic number.

It is an amenable number.

7725940 is an abundant number, since it is smaller than the sum of its proper divisors (8498576).

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

7725940 is a wasteful number, since it uses less digits than its factorization.

7725940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 386306 (or 386304 counting only the distinct ones).

The product of its (nonzero) digits is 17640, while the sum is 34.

The square root of 7725940 is about 2779.5575187429. The cubic root of 7725940 is about 197.6895792219.

The spelling of 7725940 in words is "seven million, seven hundred twenty-five thousand, nine hundred forty".