402211224 has 64 divisors (see below), whose sum is σ = 1118976000. Its totient is φ = 133863840.

The previous prime is 402211217. The next prime is 402211231. The reversal of 402211224 is 422112204.

It is an interprime number because it is at equal distance from previous prime (402211217) and next prime (402211231).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 402211197 and 402211206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 213117 + ... + 214995.

It is an arithmetic number, because the mean of its divisors is an integer number (17484000).

Almost surely, 2^402211224 is an apocalyptic number.

It is an amenable number.

402211224 is an abundant number, since it is smaller than the sum of its proper divisors (716764776).

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

402211224 is a wasteful number, since it uses less digits than its factorization.

402211224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2885 (or 2875 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 402211224 is about 20055.2044118229. The cubic root of 402211224 is about 738.1615087063.

Adding to 402211224 its reverse (422112204), we get a palindrome (824323428).

The spelling of 402211224 in words is "four hundred two million, two hundred eleven thousand, two hundred twenty-four".