400206022 has 4 divisors (see below), whose sum is σ = 600309036. Its totient is φ = 200103010.

The previous prime is 400206019. The next prime is 400206067. The reversal of 400206022 is 220602004.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 400205987 and 400206005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100051504 + ... + 100051507.

It is an arithmetic number, because the mean of its divisors is an integer number (150077259).

Almost surely, 2^400206022 is an apocalyptic number.

400206022 is a deficient number, since it is larger than the sum of its proper divisors (200103014).

400206022 is a wasteful number, since it uses less digits than its factorization.

400206022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200103013.

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

The square root of 400206022 is about 20005.1498869666. The cubic root of 400206022 is about 736.9327766059.

Adding to 400206022 its reverse (220602004), we get a palindrome (620808026).

The spelling of 400206022 in words is "four hundred million, two hundred six thousand, twenty-two".