162490 has 8 divisors (see below), whose sum is σ = 292500. Its totient is φ = 64992.

The previous prime is 162473. The next prime is 162493. The reversal of 162490 is 94261.

It can be written as a sum of positive squares in 2 ways, for example, as 162409 + 81 = 403^2 + 9^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (162493) by changing a digit.

162490 is an untouchable number, because it is not equal to the sum of proper divisors of any 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 3 ways as a sum of consecutive naturals, for example, 8115 + ... + 8134.

2¹⁶²⁴⁹⁰ is an apocalyptic number.

162490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

162490 is a deficient number, since it is larger than the sum of its proper divisors (130010).

162490 is a wasteful number, since it uses less digits than its factorization.

162490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16256.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 162490 is about 403.1004837506. The cubic root of 162490 is about 54.5685247528.

The spelling of 162490 in words is "one hundred sixty-two thousand, four hundred ninety".