3215430432 has 144 divisors (see below), whose sum is σ = 9515862720. Its totient is φ = 1068049152.

The previous prime is 3215430431. The next prime is 3215430457. The reversal of 3215430432 is 2340345123.

3215430432 is a `hidden beast` number, since 321 + 5 + 4 + 304 + 32 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 3215430396 and 3215430405.

It is not an unprimeable number, because it can be changed into a prime (3215430431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3024333 + ... + 3025395.

It is an arithmetic number, because the mean of its divisors is an integer number (66082380).

Almost surely, 2^3215430432 is an apocalyptic number.

3215430432 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3215430432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4757931360).

3215430432 is an abundant number, since it is smaller than the sum of its proper divisors (6300432288).

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

3215430432 is a wasteful number, since it uses less digits than its factorization.

3215430432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1477 (or 1457 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 27.

The square root of 3215430432 is about 56704.7655140201. The cubic root of 3215430432 is about 1475.9773940619.

Adding to 3215430432 its reverse (2340345123), we get a palindrome (5555775555).

The spelling of 3215430432 in words is "three billion, two hundred fifteen million, four hundred thirty thousand, four hundred thirty-two".