40220344 has 32 divisors (see below), whose sum is σ = 78926400. Its totient is φ = 19194880.

The previous prime is 40220329. The next prime is 40220381. The reversal of 40220344 is 44302204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14112 + ... + 16720.

It is an arithmetic number, because the mean of its divisors is an integer number (2466450).

Almost surely, 2^40220344 is an apocalyptic number.

It is an amenable number.

40220344 is a deficient number, since it is larger than the sum of its proper divisors (38706056).

40220344 is a wasteful number, since it uses less digits than its factorization.

40220344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2703 (or 2699 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 19.

The square root of 40220344 is about 6341.9511193323. The cubic root of 40220344 is about 342.6220113365.

Adding to 40220344 its reverse (44302204), we get a palindrome (84522548).

The spelling of 40220344 in words is "forty million, two hundred twenty thousand, three hundred forty-four".