162920128 has 56 divisors (see below), whose sum is σ = 381430784. Its totient is φ = 67564800.

The previous prime is 162920083. The next prime is 162920137. The reversal of 162920128 is 821029261.

It is a tau number, because it is divible by the number of its divisors (56).

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a self number, because there is not a number n which added to its sum of digits gives 162920128.

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, 8023 + ... + 19753.

It is an arithmetic number, because the mean of its divisors is an integer number (6811264).

Almost surely, 2^162920128 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 162920128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (190715392).

162920128 is an abundant number, since it is smaller than the sum of its proper divisors (218510656).

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

162920128 is a wasteful number, since it uses less digits than its factorization.

162920128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11781 (or 11771 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 162920128 is about 12764.0169225836. The cubic root of 162920128 is about 546.1663185754.

Adding to 162920128 its reverse (821029261), we get a palindrome (983949389).

The spelling of 162920128 in words is "one hundred sixty-two million, nine hundred twenty thousand, one hundred twenty-eight".