40412220 has 48 divisors (see below), whose sum is σ = 116809728. Its totient is φ = 10428480.

The previous prime is 40412209. The next prime is 40412231. The reversal of 40412220 is 2221404.

It is an interprime number because it is at equal distance from previous prime (40412209) and next prime (40412231).

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 40412220.

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 15 ways as a sum of consecutive naturals, for example, 9004 + ... + 12723.

It is an arithmetic number, because the mean of its divisors is an integer number (2433536).

Almost surely, 2^40412220 is an apocalyptic number.

It is an amenable number.

40412220 is an abundant number, since it is smaller than the sum of its proper divisors (76397508).

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

40412220 is a wasteful number, since it uses less digits than its factorization.

40412220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21770 (or 21768 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 40412220 is about 6357.0606415229. The cubic root of 40412220 is about 343.1659870879.

Adding to 40412220 its reverse (2221404), we get a palindrome (42633624).

The spelling of 40412220 in words is "forty million, four hundred twelve thousand, two hundred twenty".