20150013 has 32 divisors (see below), whose sum is σ = 30965760. Its totient is φ = 11551680.

The previous prime is 20149973. The next prime is 20150021. The reversal of 20150013 is 31005102.

It is not a de Polignac number, because 20150013 - 2⁹ = 20149501 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20150033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 52420 + ... + 52802.

It is an arithmetic number, because the mean of its divisors is an integer number (967680).

Almost surely, 2^20150013 is an apocalyptic number.

It is an amenable number.

20150013 is a deficient number, since it is larger than the sum of its proper divisors (10815747).

20150013 is a wasteful number, since it uses less digits than its factorization.

20150013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 489.

The product of its (nonzero) digits is 30, while the sum is 12.

The square root of 20150013 is about 4488.8765855167. The cubic root of 20150013 is about 272.1187351064.

Adding to 20150013 its reverse (31005102), we get a palindrome (51155115).

The spelling of 20150013 in words is "twenty million, one hundred fifty thousand, thirteen".