40223784 has 16 divisors (see below), whose sum is σ = 100559520. Its totient is φ = 13407920.

The previous prime is 40223749. The next prime is 40223789. The reversal of 40223784 is 48732204.

It is not an unprimeable number, because it can be changed into a prime (40223789) 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, 837972 + ... + 838019.

It is an arithmetic number, because the mean of its divisors is an integer number (6284970).

Almost surely, 2^40223784 is an apocalyptic number.

It is an amenable number.

40223784 is an abundant number, since it is smaller than the sum of its proper divisors (60335736).

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

40223784 is a wasteful number, since it uses less digits than its factorization.

40223784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1676000 (or 1675996 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 30.

The square root of 40223784 is about 6342.2223234447. Note that the first 3 decimals coincide. The cubic root of 40223784 is about 342.6317790809.

Adding to 40223784 its reverse (48732204), we get a palindrome (88955988).

The spelling of 40223784 in words is "forty million, two hundred twenty-three thousand, seven hundred eighty-four".