400220202 has 16 divisors (see below), whose sum is σ = 800664480. Its totient is φ = 133369392.

The previous prime is 400220201. The next prime is 400220203. The reversal of 400220202 is 202022004.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (400220201) and next prime (400220203).

It is not an unprimeable number, because it can be changed into a prime (400220201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21949 + ... + 35807.

It is an arithmetic number, because the mean of its divisors is an integer number (50041530).

Almost surely, 2^400220202 is an apocalyptic number.

400220202 is an abundant number, since it is smaller than the sum of its proper divisors (400444278).

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

400220202 is a wasteful number, since it uses less digits than its factorization.

400220202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18677.

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

The square root of 400220202 is about 20005.5042925691. The cubic root of 400220202 is about 736.9414801093.

Adding to 400220202 its reverse (202022004), we get a palindrome (602242206).

The spelling of 400220202 in words is "four hundred million, two hundred twenty thousand, two hundred two".