20589549 has 8 divisors (see below), whose sum is σ = 28338432. Its totient is φ = 13283520.

The previous prime is 20589523. The next prime is 20589551. The reversal of 20589549 is 94598502.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20589549 - 2¹⁶ = 20524013 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20589549.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20589589) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 110604 + ... + 110789.

It is an arithmetic number, because the mean of its divisors is an integer number (3542304).

Almost surely, 2^20589549 is an apocalyptic number.

It is an amenable number.

20589549 is a deficient number, since it is larger than the sum of its proper divisors (7748883).

20589549 is a wasteful number, since it uses less digits than its factorization.

20589549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221427.

The product of its (nonzero) digits is 129600, while the sum is 42.

The square root of 20589549 is about 4537.5708258935. The cubic root of 20589549 is about 274.0831127625.

The spelling of 20589549 in words is "twenty million, five hundred eighty-nine thousand, five hundred forty-nine".