1620468032 has 56 divisors (see below), whose sum is σ = 3361166760. Its totient is φ = 774144000.

The previous prime is 1620468023. The next prime is 1620468041. The reversal of 1620468032 is 2308640261.

It is an interprime number because it is at equal distance from previous prime (1620468023) and next prime (1620468041).

It can be written as a sum of positive squares in 4 ways, for example, as 66846976 + 1553621056 = 8176^2 + 39416^2 .

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a self number, because there is not a number n which added to its sum of digits gives 1620468032.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 175532 + ... + 184532.

It is an arithmetic number, because the mean of its divisors is an integer number (60020835).

Almost surely, 2^1620468032 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 1620468032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1680583380).

1620468032 is an abundant number, since it is smaller than the sum of its proper divisors (1740698728).

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

1620468032 is an equidigital number, since it uses as much as digits as its factorization.

1620468032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9139 (or 9129 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 32.

The square root of 1620468032 is about 40255.0373493803. The cubic root of 1620468032 is about 1174.5733853695.

The spelling of 1620468032 in words is "one billion, six hundred twenty million, four hundred sixty-eight thousand, thirty-two".