40034220 has 48 divisors (see below), whose sum is σ = 113460480. Its totient is φ = 10545856.

The previous prime is 40034219. The next prime is 40034231. The reversal of 40034220 is 2243004.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 40034220.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 961 + ... + 8999.

It is an arithmetic number, because the mean of its divisors is an integer number (2363760).

Almost surely, 2^40034220 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 40034220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56730240).

40034220 is an abundant number, since it is smaller than the sum of its proper divisors (73426260).

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

40034220 is a wasteful number, since it uses less digits than its factorization.

40034220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8134 (or 8132 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 15.

The square root of 40034220 is about 6327.2600705203. The cubic root of 40034220 is about 342.0926871657.

Adding to 40034220 its reverse (2243004), we get a palindrome (42277224).

The spelling of 40034220 in words is "forty million, thirty-four thousand, two hundred twenty".