162001620 has 120 divisors (see below), whose sum is σ = 554466528. Its totient is φ = 39268800.

The previous prime is 162001613. The next prime is 162001633. The reversal of 162001620 is 26100261.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 162001593 and 162001602.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 13275 + ... + 22365.

Almost surely, 2^162001620 is an apocalyptic number.

162001620 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 162001620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (277233264).

162001620 is an abundant number, since it is smaller than the sum of its proper divisors (392464908).

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

162001620 is a wasteful number, since it uses less digits than its factorization.

162001620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9123 (or 9112 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 162001620 is about 12727.9857008091. The cubic root of 162001620 is about 545.1379949642.

Adding to 162001620 its reverse (26100261), we get a palindrome (188101881).

The spelling of 162001620 in words is "one hundred sixty-two million, one thousand, six hundred twenty".