20458162 has 4 divisors (see below), whose sum is σ = 30687246. Its totient is φ = 10229080.

The previous prime is 20458129. The next prime is 20458181. The reversal of 20458162 is 26185402.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 17901361 + 2556801 = 4231^2 + 1599^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20458162.

It is an unprimeable 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 as a sum of consecutive naturals, namely, 5114539 + ... + 5114542.

Almost surely, 2^20458162 is an apocalyptic number.

20458162 is a deficient number, since it is larger than the sum of its proper divisors (10229084).

20458162 is a wasteful number, since it uses less digits than its factorization.

20458162 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10229083.

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 20458162 is about 4523.0699751386. The cubic root of 20458162 is about 273.4988709072.

The spelling of 20458162 in words is "twenty million, four hundred fifty-eight thousand, one hundred sixty-two".