20813054 has 4 divisors (see below), whose sum is σ = 31219584. Its totient is φ = 10406526.

The previous prime is 20813041. The next prime is 20813063. The reversal of 20813054 is 45031802.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5203262 + ... + 5203265.

It is an arithmetic number, because the mean of its divisors is an integer number (7804896).

Almost surely, 2^20813054 is an apocalyptic number.

20813054 is a deficient number, since it is larger than the sum of its proper divisors (10406530).

20813054 is a wasteful number, since it uses less digits than its factorization.

20813054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10406529.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 20813054 is about 4562.1326153456. The cubic root of 20813054 is about 275.0712939121.

Adding to 20813054 its reverse (45031802), we get a palindrome (65844856).

The spelling of 20813054 in words is "twenty million, eight hundred thirteen thousand, fifty-four".