438022998 has 128 divisors (see below), whose sum is σ = 1188864000. Its totient is φ = 116756640.

The previous prime is 438022973. The next prime is 438023039. The reversal of 438022998 is 899220834.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 509493 + ... + 510351.

It is an arithmetic number, because the mean of its divisors is an integer number (9288000).

Almost surely, 2^438022998 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 438022998, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (594432000).

438022998 is an abundant number, since it is smaller than the sum of its proper divisors (750841002).

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

438022998 is a wasteful number, since it uses less digits than its factorization.

438022998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 967 (or 961 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The square root of 438022998 is about 20928.9989727173. The cubic root of 438022998 is about 759.4496234545.

The spelling of 438022998 in words is "four hundred thirty-eight million, twenty-two thousand, nine hundred ninety-eight".