40223412 has 48 divisors (see below), whose sum is σ = 108823680. Its totient is φ = 12824064.

The previous prime is 40223371. The next prime is 40223413. The reversal of 40223412 is 21432204.

40223412 is nontrivially palindromic in base 13.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40223413) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5613 + ... + 10580.

It is an arithmetic number, because the mean of its divisors is an integer number (2267160).

Almost surely, 2^40223412 is an apocalyptic number.

It is an amenable number.

40223412 is an abundant number, since it is smaller than the sum of its proper divisors (68600268).

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

40223412 is a wasteful number, since it uses less digits than its factorization.

40223412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16229 (or 16221 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 40223412 is about 6342.1929961174. The cubic root of 40223412 is about 342.6307228284.

Adding to 40223412 its reverse (21432204), we get a palindrome (61655616).

The spelling of 40223412 in words is "forty million, two hundred twenty-three thousand, four hundred twelve".