20544814 has 24 divisors (see below), whose sum is σ = 33381720. Its totient is φ = 9453600.

The previous prime is 20544809. The next prime is 20544817. The reversal of 20544814 is 41844502.

It is a super-4 number, since 4×20544814⁴ (a number of 30 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20544817) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 203364 + ... + 203464.

It is an arithmetic number, because the mean of its divisors is an integer number (1390905).

Almost surely, 2^20544814 is an apocalyptic number.

20544814 is a deficient number, since it is larger than the sum of its proper divisors (12836906).

20544814 is a wasteful number, since it uses less digits than its factorization.

20544814 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276 (or 175 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 28.

The square root of 20544814 is about 4532.6387458080. The cubic root of 20544814 is about 273.8844683158.

The spelling of 20544814 in words is "twenty million, five hundred forty-four thousand, eight hundred fourteen".