20483578 has 4 divisors (see below), whose sum is σ = 30725370. Its totient is φ = 10241788.

The previous prime is 20483569. The next prime is 20483579. The reversal of 20483578 is 87538402.

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 + 6066369 = 3797^2 + 2463^2 .

It is not an unprimeable number, because it can be changed into a prime (20483579) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5120893 + ... + 5120896.

Almost surely, 2^20483578 is an apocalyptic number.

20483578 is a deficient number, since it is larger than the sum of its proper divisors (10241792).

20483578 is a wasteful number, since it uses less digits than its factorization.

20483578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10241791.

The product of its (nonzero) digits is 53760, while the sum is 37.

The square root of 20483578 is about 4525.8786992141. The cubic root of 20483578 is about 273.6120835976.

The spelling of 20483578 in words is "twenty million, four hundred eighty-three thousand, five hundred seventy-eight".