40223712 has 24 divisors (see below), whose sum is σ = 105587496. Its totient is φ = 13407872.

The previous prime is 40223707. The next prime is 40223713. The reversal of 40223712 is 21732204.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40223713) 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, 209403 + ... + 209594.

It is an arithmetic number, because the mean of its divisors is an integer number (4399479).

Almost surely, 2^40223712 is an apocalyptic number.

It is an amenable number.

40223712 is an abundant number, since it is smaller than the sum of its proper divisors (65363784).

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

40223712 is a wasteful number, since it uses less digits than its factorization.

40223712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 419010 (or 419002 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 21.

The square root of 40223712 is about 6342.2166471984. The cubic root of 40223712 is about 342.6315746454.

Adding to 40223712 its reverse (21732204), we get a palindrome (61955916).

The spelling of 40223712 in words is "forty million, two hundred twenty-three thousand, seven hundred twelve".