20534442 has 8 divisors (see below), whose sum is σ = 41068896. Its totient is φ = 6844812.

The previous prime is 20534429. The next prime is 20534443. The reversal of 20534442 is 24443502.

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

20534442 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (20534443) 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, 1711198 + ... + 1711209.

It is an arithmetic number, because the mean of its divisors is an integer number (5133612).

Almost surely, 2^20534442 is an apocalyptic number.

20534442 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20534442 is a wasteful number, since it uses less digits than its factorization.

20534442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3422412.

The product of its (nonzero) digits is 3840, while the sum is 24.

The square root of 20534442 is about 4531.4944554749. The cubic root of 20534442 is about 273.8383705855.

Adding to 20534442 its reverse (24443502), we get a palindrome (44977944).

The spelling of 20534442 in words is "twenty million, five hundred thirty-four thousand, four hundred forty-two".