1620304350 has 96 divisors (see below), whose sum is σ = 4655535360. Its totient is φ = 365264640.

The previous prime is 1620304319. The next prime is 1620304351. The reversal of 1620304350 is 534030261.

It is a happy number.

1620304350 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 1620304350.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1620304351) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 66081 + ... + 87219.

It is an arithmetic number, because the mean of its divisors is an integer number (48495160).

Almost surely, 2^1620304350 is an apocalyptic number.

1620304350 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1620304350, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2327767680).

1620304350 is an abundant number, since it is smaller than the sum of its proper divisors (3035231010).

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

1620304350 is a wasteful number, since it uses less digits than its factorization.

1620304350 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21234 (or 21229 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 1620304350 is about 40253.0042357089. The cubic root of 1620304350 is about 1174.5338365086.

The spelling of 1620304350 in words is "one billion, six hundred twenty million, three hundred four thousand, three hundred fifty".