400422022 has 48 divisors (see below), whose sum is σ = 820873872. Its totient is φ = 144002880.

The previous prime is 400421993. The next prime is 400422041. The reversal of 400422022 is 220224004.

It is a junction number, because it is equal to n+sod(n) for n = 400421987 and 400422005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 273 + ... + 28300.

It is an arithmetic number, because the mean of its divisors is an integer number (17101539).

Almost surely, 2^400422022 is an apocalyptic number.

400422022 is an abundant number, since it is smaller than the sum of its proper divisors (420451850).

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

400422022 is a wasteful number, since it uses less digits than its factorization.

400422022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28613 (or 28606 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 16.

The square root of 400422022 is about 20010.5477686144. The cubic root of 400422022 is about 737.0653323750.

Adding to 400422022 its reverse (220224004), we get a palindrome (620646026).

The spelling of 400422022 in words is "four hundred million, four hundred twenty-two thousand, twenty-two".