438728100 has 36 divisors (see below), whose sum is σ = 1269387504. Its totient is φ = 116994080.

The previous prime is 438728093. The next prime is 438728113. The reversal of 438728100 is 1827834.

It is a super-2 number, since 2×438728100² = 384964691459220000, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 730914 + ... + 731513.

It is an arithmetic number, because the mean of its divisors is an integer number (35260764).

Almost surely, 2^438728100 is an apocalyptic number.

It is an amenable number.

438728100 is an abundant number, since it is smaller than the sum of its proper divisors (830659404).

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

438728100 is a wasteful number, since it uses less digits than its factorization.

438728100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1462444 (or 1462437 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 33.

The square root of 438728100 is about 20945.8372952718. The cubic root of 438728100 is about 759.8569098109.

The spelling of 438728100 in words is "four hundred thirty-eight million, seven hundred twenty-eight thousand, one hundred".