1620067072 has 72 divisors (see below), whose sum is σ = 3665995760. Its totient is φ = 708341760.

The previous prime is 1620067069. The next prime is 1620067081. The reversal of 1620067072 is 2707600261.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50422 + ... + 76042.

Almost surely, 2^1620067072 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 1620067072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1832997880).

1620067072 is an abundant number, since it is smaller than the sum of its proper divisors (2045928688).

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

1620067072 is a wasteful number, since it uses less digits than its factorization.

1620067072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25669 (or 25655 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 31.

The square root of 1620067072 is about 40250.0567949910. The cubic root of 1620067072 is about 1174.4765006456.

The spelling of 1620067072 in words is "one billion, six hundred twenty million, sixty-seven thousand, seventy-two".