400220022 has 8 divisors (see below), whose sum is σ = 800440056. Its totient is φ = 133406672.

The previous prime is 400220003. The next prime is 400220027. The reversal of 400220022 is 220022004.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

400220022 is an admirable number.

400220022 is a modest number, since divided by 220022 gives 4 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400220027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33351663 + ... + 33351674.

It is an arithmetic number, because the mean of its divisors is an integer number (100055007).

Almost surely, 2^400220022 is an apocalyptic number.

400220022 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

400220022 is a wasteful number, since it uses less digits than its factorization.

400220022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66703342.

The product of its (nonzero) digits is 64, while the sum is 12.

The square root of 400220022 is about 20005.4997938067. The cubic root of 400220022 is about 736.9413696289.

Adding to 400220022 its reverse (220022004), we get a palindrome (620242026).

It can be divided in two parts, 40022002 and 2, that added together give a palindrome (40022004).

The spelling of 400220022 in words is "four hundred million, two hundred twenty thousand, twenty-two".