162740 has 24 divisors (see below), whose sum is σ = 349440. Its totient is φ = 63648.

The previous prime is 162739. The next prime is 162749. The reversal of 162740 is 47261.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (162749) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1529 + ... + 1631.

It is an arithmetic number, because the mean of its divisors is an integer number (14560).

2¹⁶²⁷⁴⁰ is an apocalyptic number.

162740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

162740 is an abundant number, since it is smaller than the sum of its proper divisors (186700).

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

162740 is a wasteful number, since it uses less digits than its factorization.

162740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191 (or 189 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 162740 is about 403.4104609452. The cubic root of 162740 is about 54.5964959936.

The spelling of 162740 in words is "one hundred sixty-two thousand, seven hundred forty".