398022888 has 64 divisors (see below), whose sum is σ = 1032192000. Its totient is φ = 127765440.

The previous prime is 398022851. The next prime is 398022899. The reversal of 398022888 is 888220893.

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, 164713 + ... + 167111.

It is an arithmetic number, because the mean of its divisors is an integer number (16128000).

Almost surely, 2^398022888 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 398022888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (516096000).

398022888 is an abundant number, since it is smaller than the sum of its proper divisors (634169112).

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

398022888 is a wasteful number, since it uses less digits than its factorization.

398022888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2662 (or 2658 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 48.

The square root of 398022888 is about 19950.5109709000. The cubic root of 398022888 is about 735.5903369625.

The spelling of 398022888 in words is "three hundred ninety-eight million, twenty-two thousand, eight hundred eighty-eight".