1620272000 has 64 divisors (see below), whose sum is σ = 4028441040. Its totient is φ = 648102400.

The previous prime is 1620271993. The next prime is 1620272039. The reversal of 1620272000 is 2720261.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34634 + ... + 66633.

Almost surely, 2^1620272000 is an apocalyptic number.

1620272000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1620272000 is an abundant number, since it is smaller than the sum of its proper divisors (2408169040).

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

1620272000 is an equidigital number, since it uses as much as digits as its factorization.

1620272000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101296 (or 101274 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 1620272000 is about 40252.6024003418. The cubic root of 1620272000 is about 1174.5260197832.

Adding to 1620272000 its reverse (2720261), we get a palindrome (1622992261).

The spelling of 1620272000 in words is "one billion, six hundred twenty million, two hundred seventy-two thousand".