400041224 has 16 divisors (see below), whose sum is σ = 818266320. Its totient is φ = 181836880.

The previous prime is 400041217. The next prime is 400041247. The reversal of 400041224 is 422140004.

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, 2272874 + ... + 2273049.

It is an arithmetic number, because the mean of its divisors is an integer number (51141645).

Almost surely, 2^400041224 is an apocalyptic number.

400041224 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

400041224 is an abundant number, since it is smaller than the sum of its proper divisors (418225096).

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

400041224 is a wasteful number, since it uses less digits than its factorization.

400041224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4545940 (or 4545936 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 400041224 is about 20001.0305734480. The cubic root of 400041224 is about 736.8316106110.

Adding to 400041224 its reverse (422140004), we get a palindrome (822181228).

The spelling of 400041224 in words is "four hundred million, forty-one thousand, two hundred twenty-four".