7893540 has 36 divisors (see below), whose sum is σ = 23944284. Its totient is φ = 2104896.

The previous prime is 7893533. The next prime is 7893581. The reversal of 7893540 is 453987.

It can be written as a sum of positive squares in 2 ways, for example, as 1871424 + 6022116 = 1368^2 + 2454^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 7893495 and 7893504.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21747 + ... + 22106.

It is an arithmetic number, because the mean of its divisors is an integer number (665119).

Almost surely, 2^7893540 is an apocalyptic number.

It is an amenable number.

7893540 is an abundant number, since it is smaller than the sum of its proper divisors (16050744).

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

7893540 is a wasteful number, since it uses less digits than its factorization.

7893540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43868 (or 43863 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 7893540 is about 2809.5444470590. The cubic root of 7893540 is about 199.1088686551.

The spelling of 7893540 in words is "seven million, eight hundred ninety-three thousand, five hundred forty".