40223020 has 36 divisors (see below), whose sum is σ = 89742240. Its totient is φ = 15140608.

The previous prime is 40223011. The next prime is 40223047. The reversal of 40223020 is 2032204.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2301 + ... + 9259.

It is an arithmetic number, because the mean of its divisors is an integer number (2492840).

Almost surely, 2^40223020 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40223020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44871120).

40223020 is an abundant number, since it is smaller than the sum of its proper divisors (49519220).

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

40223020 is a wasteful number, since it uses less digits than its factorization.

40223020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7002 (or 6983 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 13.

The square root of 40223020 is about 6342.1620919053. The cubic root of 40223020 is about 342.6296097811.

Adding to 40223020 its reverse (2032204), we get a palindrome (42255224).

The spelling of 40223020 in words is "forty million, two hundred twenty-three thousand, twenty".