40217424 has 40 divisors (see below), whose sum is σ = 111888672. Its totient is φ = 12374400.

The previous prime is 40217377. The next prime is 40217449. The reversal of 40217424 is 42471204.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a junction number, because it is equal to n+sod(n) for n = 40217394 and 40217403.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31602 + ... + 32849.

Almost surely, 2^40217424 is an apocalyptic number.

It is an amenable number.

40217424 is an abundant number, since it is smaller than the sum of its proper divisors (71671248).

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

40217424 is a wasteful number, since it uses less digits than its factorization.

40217424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64475 (or 64469 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 24.

The square root of 40217424 is about 6341.7209020896. The cubic root of 40217424 is about 342.6137196746.

Adding to 40217424 its reverse (42471204), we get a palindrome (82688628).

The spelling of 40217424 in words is "forty million, two hundred seventeen thousand, four hundred twenty-four".