20548330 has 32 divisors (see below), whose sum is σ = 40538880. Its totient is φ = 7437120.

The previous prime is 20548313. The next prime is 20548331. The reversal of 20548330 is 3384502.

It is a junction number, because it is equal to n+sod(n) for n = 20548295 and 20548304.

It is not an unprimeable number, because it can be changed into a prime (20548331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40116 + ... + 40624.

It is an arithmetic number, because the mean of its divisors is an integer number (1266840).

Almost surely, 2^20548330 is an apocalyptic number.

20548330 is a deficient number, since it is larger than the sum of its proper divisors (19990550).

20548330 is a wasteful number, since it uses less digits than its factorization.

20548330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 894.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 20548330 is about 4533.0265827590. The cubic root of 20548330 is about 273.9000914452.

The spelling of 20548330 in words is "twenty million, five hundred forty-eight thousand, three hundred thirty".