162420644 has 6 divisors (see below), whose sum is σ = 284236134. Its totient is φ = 81210320.

The previous prime is 162420617. The next prime is 162420649. The reversal of 162420644 is 446024261.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 100200100 + 62220544 = 10010^2 + 7888^2 .

It is not an unprimeable number, because it can be changed into a prime (162420649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20302577 + ... + 20302584.

It is an arithmetic number, because the mean of its divisors is an integer number (47372689).

Almost surely, 2^162420644 is an apocalyptic number.

It is an amenable number.

162420644 is a deficient number, since it is larger than the sum of its proper divisors (121815490).

162420644 is a wasteful number, since it uses less digits than its factorization.

162420644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40605165 (or 40605163 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 29.

The square root of 162420644 is about 12744.4358054800. The cubic root of 162420644 is about 545.6075977606.

The spelling of 162420644 in words is "one hundred sixty-two million, four hundred twenty thousand, six hundred forty-four".