40433220 has 36 divisors (see below), whose sum is σ = 122647980. Its totient is φ = 10782144.

The previous prime is 40433219. The next prime is 40433249. The reversal of 40433220 is 2233404.

It can be written as a sum of positive squares in 2 ways, for example, as 30206016 + 10227204 = 5496^2 + 3198^2 .

It is a tau number, because it is divible by the number of its divisors (36).

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

It is a junction number, because it is equal to n+sod(n) for n = 40433193 and 40433202.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 112135 + ... + 112494.

Almost surely, 2^40433220 is an apocalyptic number.

It is an amenable number.

40433220 is an abundant number, since it is smaller than the sum of its proper divisors (82214760).

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

40433220 is a wasteful number, since it uses less digits than its factorization.

40433220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224644 (or 224639 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 18.

The square root of 40433220 is about 6358.7121337579. The cubic root of 40433220 is about 343.2254182684.

Adding to 40433220 its reverse (2233404), we get a palindrome (42666624).

The spelling of 40433220 in words is "forty million, four hundred thirty-three thousand, two hundred twenty".