40144430 has 32 divisors (see below), whose sum is σ = 75769344. Its totient is φ = 15284896.

The previous prime is 40144421. The next prime is 40144459. The reversal of 40144430 is 3444104.

It is a super-2 number, since 2×40144430² = 3223150520049800, which contains 22 as substring.

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, 79559 + ... + 80061.

It is an arithmetic number, because the mean of its divisors is an integer number (2367792).

Almost surely, 2^40144430 is an apocalyptic number.

40144430 is a deficient number, since it is larger than the sum of its proper divisors (35624914).

40144430 is a wasteful number, since it uses less digits than its factorization.

40144430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 880.

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 40144430 is about 6335.9632259034. The cubic root of 40144430 is about 342.4063146181.

Adding to 40144430 its reverse (3444104), we get a palindrome (43588534).

The spelling of 40144430 in words is "forty million, one hundred forty-four thousand, four hundred thirty".