40040224 has 48 divisors (see below), whose sum is σ = 92207808. Its totient is φ = 16756992.

The previous prime is 40040197. The next prime is 40040227. The reversal of 40040224 is 42204004.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 40040198 and 40040207.

It is not an unprimeable number, because it can be changed into a prime (40040227) 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, 7554 + ... + 11710.

It is an arithmetic number, because the mean of its divisors is an integer number (1920996).

Almost surely, 2^40040224 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40040224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46103904).

40040224 is an abundant number, since it is smaller than the sum of its proper divisors (52167584).

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

40040224 is a wasteful number, since it uses less digits than its factorization.

40040224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4217 (or 4209 counting only the distinct ones).

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

The square root of 40040224 is about 6327.7345077049. The cubic root of 40040224 is about 342.1097877180.

Adding to 40040224 its reverse (42204004), we get a palindrome (82244228).

The spelling of 40040224 in words is "forty million, forty thousand, two hundred twenty-four".