400022620 has 24 divisors (see below), whose sum is σ = 848369088. Its totient is φ = 158424000.

The previous prime is 400022587. The next prime is 400022621. The reversal of 400022620 is 26220004.

400022620 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 400022594 and 400022603.

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 pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 96996 + ... + 101035.

It is an arithmetic number, because the mean of its divisors is an integer number (35348712).

Almost surely, 2^400022620 is an apocalyptic number.

It is an amenable number.

400022620 is an abundant number, since it is smaller than the sum of its proper divisors (448346468).

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

400022620 is a wasteful number, since it uses less digits than its factorization.

400022620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198141 (or 198139 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 400022620 is about 20000.5654920055. The cubic root of 400022620 is about 736.8201882650.

Adding to 400022620 its reverse (26220004), we get a palindrome (426242624).

The spelling of 400022620 in words is "four hundred million, twenty-two thousand, six hundred twenty".