40026213 has 12 divisors (see below), whose sum is σ = 57896748. Its totient is φ = 26646720.

The previous prime is 40026197. The next prime is 40026221. The reversal of 40026213 is 31262004.

It is a happy number.

40026213 is a `hidden beast` number, since 40 + 0 + 2 + 621 + 3 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 6640929 + 33385284 = 2577^2 + 5778^2 .

It is not a de Polignac number, because 40026213 - 2⁴ = 40026197 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40026253) 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, 4681 + ... + 10097.

It is an arithmetic number, because the mean of its divisors is an integer number (4824729).

Almost surely, 2^40026213 is an apocalyptic number.

It is an amenable number.

40026213 is a deficient number, since it is larger than the sum of its proper divisors (17870535).

40026213 is a wasteful number, since it uses less digits than its factorization.

40026213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6244 (or 6241 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 40026213 is about 6326.6273005449. The cubic root of 40026213 is about 342.0698790215.

Adding to 40026213 its reverse (31262004), we get a palindrome (71288217).

The spelling of 40026213 in words is "forty million, twenty-six thousand, two hundred thirteen".