20538046 has 8 divisors (see below), whose sum is σ = 31267080. Its totient is φ = 10115688.

The previous prime is 20538043. The next prime is 20538109. The reversal of 20538046 is 64083502.

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

It is a super-2 number, since 2×20538046² = 843622666996232, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20538043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76501 + ... + 76768.

It is an arithmetic number, because the mean of its divisors is an integer number (3908385).

Almost surely, 2^20538046 is an apocalyptic number.

20538046 is a deficient number, since it is larger than the sum of its proper divisors (10729034).

20538046 is a wasteful number, since it uses less digits than its factorization.

20538046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153338.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 20538046 is about 4531.8920993333. The cubic root of 20538046 is about 273.8543901062.

The spelling of 20538046 in words is "twenty million, five hundred thirty-eight thousand, forty-six".