20582949 has 8 divisors (see below), whose sum is σ = 27526720. Its totient is φ = 13680576.

The previous prime is 20582927. The next prime is 20582963. The reversal of 20582949 is 94928502.

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

It is not a de Polignac number, because 20582949 - 2¹⁷ = 20451877 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20580949) 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, 9169 + ... + 11190.

It is an arithmetic number, because the mean of its divisors is an integer number (3440840).

Almost surely, 2^20582949 is an apocalyptic number.

It is an amenable number.

20582949 is a deficient number, since it is larger than the sum of its proper divisors (6943771).

20582949 is a wasteful number, since it uses less digits than its factorization.

20582949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20699.

The product of its (nonzero) digits is 51840, while the sum is 39.

The square root of 20582949 is about 4536.8435062277. The cubic root of 20582949 is about 274.0538237631.

The spelling of 20582949 in words is "twenty million, five hundred eighty-two thousand, nine hundred forty-nine".