40217070 has 32 divisors (see below), whose sum is σ = 102199968. Its totient is φ = 10093568.

The previous prime is 40217063. The next prime is 40217123. The reversal of 40217070 is 7071204.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38919 + ... + 39938.

It is an arithmetic number, because the mean of its divisors is an integer number (3193749).

Almost surely, 2^40217070 is an apocalyptic number.

40217070 is an abundant number, since it is smaller than the sum of its proper divisors (61982898).

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

40217070 is a wasteful number, since it uses less digits than its factorization.

40217070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78884.

The product of its (nonzero) digits is 392, while the sum is 21.

The square root of 40217070 is about 6341.6929916230. The cubic root of 40217070 is about 342.6127144253.

Adding to 40217070 its reverse (7071204), we get a palindrome (47288274).

The spelling of 40217070 in words is "forty million, two hundred seventeen thousand, seventy".