20150487 has 12 divisors (see below), whose sum is σ = 33264400. Its totient is φ = 11514528.

The previous prime is 20150483. The next prime is 20150513. The reversal of 20150487 is 78405102.

It is not a de Polignac number, because 20150487 - 2² = 20150483 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20150487.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20150483) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 159862 + ... + 159987.

Almost surely, 2^20150487 is an apocalyptic number.

20150487 is a deficient number, since it is larger than the sum of its proper divisors (13113913).

20150487 is a wasteful number, since it uses less digits than its factorization.

20150487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319862 (or 319859 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 27.

The square root of 20150487 is about 4488.9293823806. The cubic root of 20150487 is about 272.1208688233.

Adding to 20150487 its reverse (78405102), we get a palindrome (98555589).

The spelling of 20150487 in words is "twenty million, one hundred fifty thousand, four hundred eighty-seven".