162021678 has 128 divisors (see below), whose sum is σ = 418209792. Its totient is φ = 40715136.

The previous prime is 162021667. The next prime is 162021697. The reversal of 162021678 is 876120261.

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 63 ways as a sum of consecutive naturals, for example, 1572975 + ... + 1573077.

It is an arithmetic number, because the mean of its divisors is an integer number (3267264).

Almost surely, 2^162021678 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 162021678, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (209104896).

162021678 is an abundant number, since it is smaller than the sum of its proper divisors (256188114).

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

162021678 is a wasteful number, since it uses less digits than its factorization.

162021678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238.

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 162021678 is about 12728.7736251377. The cubic root of 162021678 is about 545.1604925307.

The spelling of 162021678 in words is "one hundred sixty-two million, twenty-one thousand, six hundred seventy-eight".