20130487 has 8 divisors (see below), whose sum is σ = 21732480. Its totient is φ = 18536160.

The previous prime is 20130469. The next prime is 20130491. The reversal of 20130487 is 78403102.

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

It is a cyclic number.

It is not a de Polignac number, because 20130487 - 2¹¹ = 20128439 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20130457) 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, 4314 + ... + 7672.

It is an arithmetic number, because the mean of its divisors is an integer number (2716560).

Almost surely, 2^20130487 is an apocalyptic number.

20130487 is a deficient number, since it is larger than the sum of its proper divisors (1601993).

20130487 is a wasteful number, since it uses less digits than its factorization.

20130487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3833.

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 20130487 is about 4486.7011266631. The cubic root of 20130487 is about 272.0308094786.

Adding to 20130487 its reverse (78403102), we get a palindrome (98533589).

The spelling of 20130487 in words is "twenty million, one hundred thirty thousand, four hundred eighty-seven".