32320420 has 48 divisors (see below), whose sum is σ = 74789568. Its totient is φ = 11634560.

The previous prime is 32320399. The next prime is 32320429. The reversal of 32320420 is 2402323.

It is a junction number, because it is equal to n+sod(n) for n = 32320394 and 32320403.

It is not an unprimeable number, because it can be changed into a prime (32320429) 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, 22854 + ... + 24226.

It is an arithmetic number, because the mean of its divisors is an integer number (1558116).

Almost surely, 2^32320420 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 32320420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37394784).

32320420 is an abundant number, since it is smaller than the sum of its proper divisors (42469148).

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

32320420 is a wasteful number, since it uses less digits than its factorization.

32320420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1500 (or 1498 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 16.

The square root of 32320420 is about 5685.1051001719. The cubic root of 32320420 is about 318.5363494582.

Adding to 32320420 its reverse (2402323), we get a palindrome (34722743).

The spelling of 32320420 in words is "thirty-two million, three hundred twenty thousand, four hundred twenty".