40220635 has 16 divisors (see below), whose sum is σ = 59403456. Its totient is φ = 25458048.

The previous prime is 40220599. The next prime is 40220639. The reversal of 40220635 is 53602204.

It is a happy number.

It is not a de Polignac number, because 40220635 - 2⁷ = 40220507 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40220639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43744 + ... + 44653.

It is an arithmetic number, because the mean of its divisors is an integer number (3712716).

Almost surely, 2^40220635 is an apocalyptic number.

40220635 is a deficient number, since it is larger than the sum of its proper divisors (19182821).

40220635 is a wasteful number, since it uses less digits than its factorization.

40220635 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88422.

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 40220635 is about 6341.9740617571. The cubic root of 40220635 is about 342.6228376411.

Adding to 40220635 its reverse (53602204), we get a palindrome (93822839).

The spelling of 40220635 in words is "forty million, two hundred twenty thousand, six hundred thirty-five".