32438420 has 48 divisors (see below), whose sum is σ = 78236928. Its totient is φ = 11066880.

The previous prime is 32438401. The next prime is 32438423. The reversal of 32438420 is 2483423.

It is a self number, because there is not a number n which added to its sum of digits gives 32438420.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32438423) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36380 + ... + 37260.

It is an arithmetic number, because the mean of its divisors is an integer number (1629936).

Almost surely, 2^32438420 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 32438420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39118464).

32438420 is an abundant number, since it is smaller than the sum of its proper divisors (45798508).

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

32438420 is a wasteful number, since it uses less digits than its factorization.

32438420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1160 (or 1158 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 26.

The square root of 32438420 is about 5695.4736414103. The cubic root of 32438420 is about 318.9235312953.

The spelling of 32438420 in words is "thirty-two million, four hundred thirty-eight thousand, four hundred twenty".