400202224 has 20 divisors (see below), whose sum is σ = 775881144. Its totient is φ = 199974848.

The previous prime is 400202203. The next prime is 400202303. The reversal of 400202224 is 422202004.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 400202198 and 400202207.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21594 + ... + 35590.

Almost surely, 2^400202224 is an apocalyptic number.

It is an amenable number.

400202224 is a deficient number, since it is larger than the sum of its proper divisors (375678920).

400202224 is a wasteful number, since it uses less digits than its factorization.

400202224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15792 (or 15786 counting only the distinct ones).

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

The square root of 400202224 is about 20005.0549611842. The cubic root of 400202224 is about 736.9304454070.

Adding to 400202224 its reverse (422202004), we get a palindrome (822404228).

The spelling of 400202224 in words is "four hundred million, two hundred two thousand, two hundred twenty-four".