1620627960 has 192 divisors, whose sum is σ = 5678622720. Its totient is φ = 368928000.

The previous prime is 1620627949. The next prime is 1620627977. The reversal of 1620627960 is 697260261.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2157585 + ... + 2158335.

It is an arithmetic number, because the mean of its divisors is an integer number (29576160).

Almost surely, 2^1620627960 is an apocalyptic number.

1620627960 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1620627960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2839311360).

1620627960 is an abundant number, since it is smaller than the sum of its proper divisors (4057994760).

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

1620627960 is a wasteful number, since it uses less digits than its factorization.

1620627960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1146 (or 1135 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 39.

The square root of 1620627960 is about 40257.0237349956. The cubic root of 1620627960 is about 1174.6120246164.

The spelling of 1620627960 in words is "one billion, six hundred twenty million, six hundred twenty-seven thousand, nine hundred sixty".