40026540 has 48 divisors (see below), whose sum is σ = 117976320. Its totient is φ = 10111680.

The previous prime is 40026499. The next prime is 40026541. The reversal of 40026540 is 4562004.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (40026541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16416 + ... + 18695.

It is an arithmetic number, because the mean of its divisors is an integer number (2457840).

Almost surely, 2^40026540 is an apocalyptic number.

It is an amenable number.

40026540 is an abundant number, since it is smaller than the sum of its proper divisors (77949780).

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

40026540 is a wasteful number, since it uses less digits than its factorization.

40026540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35142 (or 35140 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 40026540 is about 6326.6531436455. The cubic root of 40026540 is about 342.0708105490.

Adding to 40026540 its reverse (4562004), we get a palindrome (44588544).

The spelling of 40026540 in words is "forty million, twenty-six thousand, five hundred forty".