438080028 has 12 divisors (see below), whose sum is σ = 1022186760. Its totient is φ = 146026672.

The previous prime is 438080009. The next prime is 438080051. The reversal of 438080028 is 820080834.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×438080028² = 383828221864961568, 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 3 ways as a sum of consecutive naturals, for example, 18253323 + ... + 18253346.

It is an arithmetic number, because the mean of its divisors is an integer number (85182230).

Almost surely, 2^438080028 is an apocalyptic number.

It is an amenable number.

438080028 is an abundant number, since it is smaller than the sum of its proper divisors (584106732).

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

438080028 is a wasteful number, since it uses less digits than its factorization.

438080028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36506676 (or 36506674 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 33.

The square root of 438080028 is about 20930.3613920066. The cubic root of 438080028 is about 759.4825817944.

The spelling of 438080028 in words is "four hundred thirty-eight million, eighty thousand, twenty-eight".