40224040 has 64 divisors (see below), whose sum is σ = 96714000. Its totient is φ = 15003648.

The previous prime is 40224031. The next prime is 40224047. The reversal of 40224040 is 4042204.

It can be written as a sum of positive squares in 8 ways, for example, as 17926756 + 22297284 = 4234^2 + 4722^2 .

It is not an unprimeable number, because it can be changed into a prime (40224047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 101122 + ... + 101518.

Almost surely, 2^40224040 is an apocalyptic number.

40224040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40224040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48357000).

40224040 is an abundant number, since it is smaller than the sum of its proper divisors (56489960).

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

40224040 is a wasteful number, since it uses less digits than its factorization.

40224040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 574 (or 570 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 16.

The square root of 40224040 is about 6342.2425056127. The cubic root of 40224040 is about 342.6325059605.

Adding to 40224040 its reverse (4042204), we get a palindrome (44266244).

It can be divided in two parts, 402 and 24040, that added together give a palindrome (24442).

The spelling of 40224040 in words is "forty million, two hundred twenty-four thousand, forty".