20598320 has 40 divisors (see below), whose sum is σ = 48171024. Its totient is φ = 8191232.

The previous prime is 20598313. The next prime is 20598341. The reversal of 20598320 is 2389502.

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15107 + ... + 16413.

Almost surely, 2^20598320 is an apocalyptic number.

20598320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20598320 is an abundant number, since it is smaller than the sum of its proper divisors (27572704).

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

20598320 is a wasteful number, since it uses less digits than its factorization.

20598320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1517 (or 1511 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 20598320 is about 4538.5372092779. The cubic root of 20598320 is about 274.1220263832.

The spelling of 20598320 in words is "twenty million, five hundred ninety-eight thousand, three hundred twenty".