20548516 has 12 divisors (see below), whose sum is σ = 36005760. Its totient is φ = 10261160.

The previous prime is 20548513. The next prime is 20548523. The reversal of 20548516 is 61584502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20548511) 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, 825 + ... + 6463.

It is an arithmetic number, because the mean of its divisors is an integer number (3000480).

Almost surely, 2^20548516 is an apocalyptic number.

It is an amenable number.

20548516 is a deficient number, since it is larger than the sum of its proper divisors (15457244).

20548516 is a wasteful number, since it uses less digits than its factorization.

20548516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6554 (or 6552 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 31.

The square root of 20548516 is about 4533.0470988067. The cubic root of 20548516 is about 273.9009178751.

The spelling of 20548516 in words is "twenty million, five hundred forty-eight thousand, five hundred sixteen".