40818396 has 24 divisors (see below), whose sum is σ = 95774224. Its totient is φ = 13530240.

The previous prime is 40818391. The next prime is 40818409. The reversal of 40818396 is 69381804.

It is a super-2 number, since 2×40818396² = 3332282904025632, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40818391) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7225 + ... + 11568.

Almost surely, 2^40818396 is an apocalyptic number.

It is an amenable number.

40818396 is an abundant number, since it is smaller than the sum of its proper divisors (54955828).

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

40818396 is a wasteful number, since it uses less digits than its factorization.

40818396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18981 (or 18979 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 39.

The square root of 40818396 is about 6388.9276095445. The cubic root of 40818396 is about 344.3118566426.

It can be divided in two parts, 40818 and 396, that added together give a palindrome (41214).

The spelling of 40818396 in words is "forty million, eight hundred eighteen thousand, three hundred ninety-six".