438365052 has 54 divisors (see below), whose sum is σ = 1133893488. Its totient is φ = 142731744.

The previous prime is 438365051. The next prime is 438365069. The reversal of 438365052 is 250563834.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an alternating number because its digits alternate between even and odd.

It is a junction number, because it is equal to n+sod(n) for n = 438364998 and 438365016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (438365051) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 860974 + ... + 861482.

Almost surely, 2^438365052 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 438365052, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (566946744).

438365052 is an abundant number, since it is smaller than the sum of its proper divisors (695528436).

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

438365052 is a wasteful number, since it uses less digits than its factorization.

438365052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1075 (or 561 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

The square root of 438365052 is about 20937.1691496248. The cubic root of 438365052 is about 759.6472578198.

The spelling of 438365052 in words is "four hundred thirty-eight million, three hundred sixty-five thousand, fifty-two".