162440020 has 24 divisors (see below), whose sum is σ = 352888200. Its totient is φ = 62735232.

The previous prime is 162440009. The next prime is 162440023. The reversal of 162440020 is 20044261.

162440020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 34433424 + 128006596 = 5868^2 + 11314^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 162440020.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (162440023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 139455 + ... + 140614.

It is an arithmetic number, because the mean of its divisors is an integer number (14703675).

Almost surely, 2^162440020 is an apocalyptic number.

162440020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

162440020 is an abundant number, since it is smaller than the sum of its proper divisors (190448180).

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

162440020 is a wasteful number, since it uses less digits than its factorization.

162440020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280107 (or 280105 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 162440020 is about 12745.1959576932. The cubic root of 162440020 is about 545.6292930168.

Adding to 162440020 its reverse (20044261), we get a palindrome (182484281).

The spelling of 162440020 in words is "one hundred sixty-two million, four hundred forty thousand, twenty".