162705138 has 32 divisors (see below), whose sum is σ = 344856960. Its totient is φ = 51085440.

The previous prime is 162705131. The next prime is 162705157. The reversal of 162705138 is 831507261.

It is a junction number, because it is equal to n+sod(n) for n = 162705099 and 162705108.

It is not an unprimeable number, because it can be changed into a prime (162705131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4270 + ... + 18537.

It is an arithmetic number, because the mean of its divisors is an integer number (10776780).

Almost surely, 2^162705138 is an apocalyptic number.

162705138 is an abundant number, since it is smaller than the sum of its proper divisors (182151822).

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

162705138 is a wasteful number, since it uses less digits than its factorization.

162705138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22882.

The product of its (nonzero) digits is 10080, while the sum is 33.

The square root of 162705138 is about 12755.5924205816. The cubic root of 162705138 is about 545.9259717961.

The spelling of 162705138 in words is "one hundred sixty-two million, seven hundred five thousand, one hundred thirty-eight".