7240181 has 12 divisors (see below), whose sum is σ = 8301636. Its totient is φ = 6255360.

The previous prime is 7240157. The next prime is 7240183. The reversal of 7240181 is 1810427.

It can be written as a sum of positive squares in 6 ways, for example, as 3204100 + 4036081 = 1790^2 + 2009^2 .

It is not a de Polignac number, because 7240181 - 2⁶ = 7240117 is a prime.

It is a super-2 number, since 2×7240181² = 104840441825522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7240183) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 39911 + ... + 40091.

It is an arithmetic number, because the mean of its divisors is an integer number (691803).

Almost surely, 2^7240181 is an apocalyptic number.

It is an amenable number.

7240181 is a deficient number, since it is larger than the sum of its proper divisors (1061455).

7240181 is a wasteful number, since it uses less digits than its factorization.

7240181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 392 (or 211 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 23.

The square root of 7240181 is about 2690.7584432646. The cubic root of 7240181 is about 193.4564175271.

The spelling of 7240181 in words is "seven million, two hundred forty thousand, one hundred eighty-one".