400102224 has 20 divisors (see below), whose sum is σ = 1033597536. Its totient is φ = 133367392.

The previous prime is 400102217. The next prime is 400102243. The reversal of 400102224 is 422201004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4167684 + ... + 4167779.

Almost surely, 2^400102224 is an apocalyptic number.

It is an amenable number.

400102224 is an abundant number, since it is smaller than the sum of its proper divisors (633495312).

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

400102224 is a wasteful number, since it uses less digits than its factorization.

400102224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8335474 (or 8335468 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 400102224 is about 20002.5554367436. Note that the first 3 decimals coincide. The cubic root of 400102224 is about 736.8690604547.

Adding to 400102224 its reverse (422201004), we get a palindrome (822303228).

The spelling of 400102224 in words is "four hundred million, one hundred two thousand, two hundred twenty-four".