20538082 has 4 divisors (see below), whose sum is σ = 30807126. Its totient is φ = 10269040.

The previous prime is 20538043. The next prime is 20538109. The reversal of 20538082 is 28083502.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 28083502 = 2 ⋅14041751.

It can be written as a sum of positive squares in only one way, i.e., 17884441 + 2653641 = 4229^2 + 1629^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20538082.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5134519 + ... + 5134522.

Almost surely, 2^20538082 is an apocalyptic number.

20538082 is a deficient number, since it is larger than the sum of its proper divisors (10269044).

20538082 is a wasteful number, since it uses less digits than its factorization.

20538082 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10269043.

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

The square root of 20538082 is about 4531.8960711826. The cubic root of 20538082 is about 273.8545501142.

The spelling of 20538082 in words is "twenty million, five hundred thirty-eight thousand, eighty-two".