408228822 has 48 divisors (see below), whose sum is σ = 924006720. Its totient is φ = 135074952.

The previous prime is 408228811. The next prime is 408228833. The reversal of 408228822 is 228822804.

408228822 is a `hidden beast` number, since 408 + 228 + 8 + 22 = 666.

It is an interprime number because it is at equal distance from previous prime (408228811) and next prime (408228833).

It is a super-2 number, since 2×408228822² = 333301542223015368, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 64533 + ... + 70575.

It is an arithmetic number, because the mean of its divisors is an integer number (19250140).

Almost surely, 2^408228822 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 408228822, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (462003360).

408228822 is an abundant number, since it is smaller than the sum of its proper divisors (515777898).

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

408228822 is a wasteful number, since it uses less digits than its factorization.

408228822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6199 (or 6187 counting only the distinct ones).

The product of its (nonzero) digits is 32768, while the sum is 36.

The square root of 408228822 is about 20204.6732713004. The cubic root of 408228822 is about 741.8245832208.

The spelling of 408228822 in words is "four hundred eight million, two hundred twenty-eight thousand, eight hundred twenty-two".