3232440021 has 16 divisors (see below), whose sum is σ = 4534113600. Its totient is φ = 2045382528.

The previous prime is 3232440019. The next prime is 3232440023. The reversal of 3232440021 is 1200442323.

3232440021 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (3232440019) and next prime (3232440023).

It is not a de Polignac number, because 3232440021 - 2¹ = 3232440019 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3232440021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3232440023) 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, 309736 + ... + 320001.

It is an arithmetic number, because the mean of its divisors is an integer number (283382100).

Almost surely, 2^3232440021 is an apocalyptic number.

It is an amenable number.

3232440021 is a deficient number, since it is larger than the sum of its proper divisors (1301673579).

3232440021 is a wasteful number, since it uses less digits than its factorization.

3232440021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 629828.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 3232440021 is about 56854.5514536875. The cubic root of 3232440021 is about 1478.5754525264.

Adding to 3232440021 its reverse (1200442323), we get a palindrome (4432882344).

The spelling of 3232440021 in words is "three billion, two hundred thirty-two million, four hundred forty thousand, twenty-one".