7345040 has 20 divisors (see below), whose sum is σ = 17077404. Its totient is φ = 2937984.

The previous prime is 7345031. The next prime is 7345043. The reversal of 7345040 is 405437.

It can be written as a sum of positive squares in 2 ways, for example, as 5837056 + 1507984 = 2416^2 + 1228^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×7345040² = 107899225203200, which contains 22 as substring.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 7344997 and 7345015.

It is not an unprimeable number, because it can be changed into a prime (7345043) 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, 45827 + ... + 45986.

Almost surely, 2^7345040 is an apocalyptic number.

It is an amenable number.

7345040 is an abundant number, since it is smaller than the sum of its proper divisors (9732364).

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

7345040 is a wasteful number, since it uses less digits than its factorization.

7345040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91826 (or 91820 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 23.

The square root of 7345040 is about 2710.1734261851. The cubic root of 7345040 is about 194.3858830147.

The spelling of 7345040 in words is "seven million, three hundred forty-five thousand, forty".