438820732 has 48 divisors (see below), whose sum is σ = 925872640. Its totient is φ = 177774912.

The previous prime is 438820729. The next prime is 438820741. The reversal of 438820732 is 237028834.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 438820691 and 438820700.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 453313 + ... + 454279.

Almost surely, 2^438820732 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 438820732, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (462936320).

438820732 is an abundant number, since it is smaller than the sum of its proper divisors (487051908).

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

438820732 is a wasteful number, since it uses less digits than its factorization.

438820732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1850 (or 1848 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 37.

The square root of 438820732 is about 20948.0484055198. The cubic root of 438820732 is about 759.9103841702.

The spelling of 438820732 in words is "four hundred thirty-eight million, eight hundred twenty thousand, seven hundred thirty-two".