1620032224 has 96 divisors (see below), whose sum is σ = 3404104704. Its totient is φ = 757693440.

The previous prime is 1620032203. The next prime is 1620032269. The reversal of 1620032224 is 4222300261.

It is a junction number, because it is equal to n+sod(n) for n = 1620032195 and 1620032204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6952812 + ... + 6953044.

It is an arithmetic number, because the mean of its divisors is an integer number (35459424).

Almost surely, 2^1620032224 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 1620032224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1702052352).

1620032224 is an abundant number, since it is smaller than the sum of its proper divisors (1784072480).

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

1620032224 is a wasteful number, since it uses less digits than its factorization.

1620032224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 480 (or 472 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 1620032224 is about 40249.6238988639. The cubic root of 1620032224 is about 1174.4680795024.

Adding to 1620032224 its reverse (4222300261), we get a palindrome (5842332485).

The spelling of 1620032224 in words is "one billion, six hundred twenty million, thirty-two thousand, two hundred twenty-four".