32440000 has 70 divisors (see below), whose sum is σ = 80539844. Its totient is φ = 12960000.

The previous prime is 32439997. The next prime is 32440003. The reversal of 32440000 is 4423.

It is an interprime number because it is at equal distance from previous prime (32439997) and next prime (32440003).

It is not an unprimeable number, because it can be changed into a prime (32440003) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 39595 + ... + 40405.

Almost surely, 2^32440000 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 32440000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40269922).

32440000 is an abundant number, since it is smaller than the sum of its proper divisors (48099844).

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

32440000 is an frugal number, since it uses more digits than its factorization.

32440000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 843 (or 818 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 13.

The square root of 32440000 is about 5695.6123463593. The cubic root of 32440000 is about 318.9287092191.

Adding to 32440000 its reverse (4423), we get a palindrome (32444423).

It can be divided in two parts, 324 and 40000, that multiplied together give a 4-th power (12960000 = 60⁴).

The spelling of 32440000 in words is "thirty-two million, four hundred forty thousand".