40026864 has 20 divisors (see below), whose sum is σ = 103402856. Its totient is φ = 13342272.

The previous prime is 40026853. The next prime is 40026869. The reversal of 40026864 is 46862004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40026869) 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 3 ways as a sum of consecutive naturals, for example, 416899 + ... + 416994.

Almost surely, 2^40026864 is an apocalyptic number.

It is an amenable number.

40026864 is an abundant number, since it is smaller than the sum of its proper divisors (63375992).

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

40026864 is a wasteful number, since it uses less digits than its factorization.

40026864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 833904 (or 833898 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 30.

The square root of 40026864 is about 6326.6787495494. The cubic root of 40026864 is about 342.0717335253.

Adding to 40026864 its reverse (46862004), we get a palindrome (86888868).

The spelling of 40026864 in words is "forty million, twenty-six thousand, eight hundred sixty-four".