40224418 has 8 divisors (see below), whose sum is σ = 64977948. Its totient is φ = 18565104.

The previous prime is 40224413. The next prime is 40224427. The reversal of 40224418 is 81442204.

It can be written as a sum of positive squares in 2 ways, for example, as 30283009 + 9941409 = 5503^2 + 3153^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 40224392 and 40224401.

It is not an unprimeable number, because it can be changed into a prime (40224413) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 773521 + ... + 773572.

Almost surely, 2^40224418 is an apocalyptic number.

40224418 is a deficient number, since it is larger than the sum of its proper divisors (24753530).

40224418 is a wasteful number, since it uses less digits than its factorization.

40224418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1547108.

The product of its (nonzero) digits is 2048, while the sum is 25.

The square root of 40224418 is about 6342.2723057277. The cubic root of 40224418 is about 342.6335792381.

The spelling of 40224418 in words is "forty million, two hundred twenty-four thousand, four hundred eighteen".