400022622 has 12 divisors (see below), whose sum is σ = 866715720. Its totient is φ = 133340868.

The previous prime is 400022621. The next prime is 400022633. The reversal of 400022622 is 226220004.

It is a happy number.

400022622 is a `hidden beast` number, since 40 + 0 + 0 + 2 + 2 + 622 = 666.

It is a super-2 number, since 2×400022622² = 320036196223509768, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 22223479 = 400022622 / (4 + 0 + 0 + 0 + 2 + 2 + 6 + 2 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 400022595 and 400022604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400022621) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11111722 + ... + 11111757.

It is an arithmetic number, because the mean of its divisors is an integer number (72226310).

Almost surely, 2^400022622 is an apocalyptic number.

400022622 is an abundant number, since it is smaller than the sum of its proper divisors (466693098).

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

400022622 is a wasteful number, since it uses less digits than its factorization.

400022622 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22223487 (or 22223484 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 400022622 is about 20000.5655420041. The cubic root of 400022622 is about 736.8201894930.

Adding to 400022622 its reverse (226220004), we get a palindrome (626242626).

It can be divided in two parts, 40002 and 2622, that added together give a palindrome (42624).

The spelling of 400022622 in words is "four hundred million, twenty-two thousand, six hundred twenty-two".