20544648 has 32 divisors (see below), whose sum is σ = 51617760. Its totient is φ = 6814080.

The previous prime is 20544611. The next prime is 20544659. The reversal of 20544648 is 84644502.

It is a super-2 number, since 2×20544648² = 844165122887808, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3036 + ... + 7092.

It is an arithmetic number, because the mean of its divisors is an integer number (1613055).

Almost surely, 2^20544648 is an apocalyptic number.

It is an amenable number.

20544648 is an abundant number, since it is smaller than the sum of its proper divisors (31073112).

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

20544648 is a wasteful number, since it uses less digits than its factorization.

20544648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4277 (or 4273 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 33.

The square root of 20544648 is about 4532.6204341418. The cubic root of 20544648 is about 273.8837306610.

The spelling of 20544648 in words is "twenty million, five hundred forty-four thousand, six hundred forty-eight".