438875136 has 132 divisors (see below), whose sum is σ = 1448489952. Its totient is φ = 125374464.

The previous prime is 438875119. The next prime is 438875137. The reversal of 438875136 is 631578834.

438875136 is a `hidden beast` number, since 438 + 87 + 5 + 136 = 666.

It is a super-2 number, since 2×438875136² = 385222769998036992, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 438875091 and 438875100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (438875137) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 61111 + ... + 67913.

Almost surely, 2^438875136 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 438875136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (724244976).

438875136 is an abundant number, since it is smaller than the sum of its proper divisors (1009614816).

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

438875136 is a wasteful number, since it uses less digits than its factorization.

438875136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6836 (or 6815 counting only the distinct ones).

The product of its digits is 483840, while the sum is 45.

The square root of 438875136 is about 20949.3469110615. The cubic root of 438875136 is about 759.9417868616.

It can be divided in two parts, 4388 and 75136, that added together give a square (79524 = 282²).

The spelling of 438875136 in words is "four hundred thirty-eight million, eight hundred seventy-five thousand, one hundred thirty-six".