20454058 has 4 divisors (see below), whose sum is σ = 30681090. Its totient is φ = 10227028.

The previous prime is 20454041. The next prime is 20454059. The reversal of 20454058 is 85045402.

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., 14417209 + 6036849 = 3797^2 + 2457^2 .

It is not an unprimeable number, because it can be changed into a prime (20454059) 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 as a sum of consecutive naturals, namely, 5113513 + ... + 5113516.

Almost surely, 2^20454058 is an apocalyptic number.

20454058 is a deficient number, since it is larger than the sum of its proper divisors (10227032).

20454058 is a wasteful number, since it uses less digits than its factorization.

20454058 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10227031.

The product of its (nonzero) digits is 6400, while the sum is 28.

The square root of 20454058 is about 4522.6162782177. The cubic root of 20454058 is about 273.4805813132.

The spelling of 20454058 in words is "twenty million, four hundred fifty-four thousand, fifty-eight".