20580474 has 8 divisors (see below), whose sum is σ = 41160960. Its totient is φ = 6860156.

The previous prime is 20580463. The next prime is 20580481. The reversal of 20580474 is 47408502.

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

20580474 is an admirable number.

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 3 ways as a sum of consecutive naturals, for example, 1715034 + ... + 1715045.

It is an arithmetic number, because the mean of its divisors is an integer number (5145120).

Almost surely, 2^20580474 is an apocalyptic number.

20580474 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

20580474 is a wasteful number, since it uses less digits than its factorization.

20580474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3430084.

The product of its (nonzero) digits is 8960, while the sum is 30.

The square root of 20580474 is about 4536.5707312903. The cubic root of 20580474 is about 274.0428387741.

Adding to 20580474 its reverse (47408502), we get a palindrome (67988976).

The spelling of 20580474 in words is "twenty million, five hundred eighty thousand, four hundred seventy-four".