20151064 has 16 divisors (see below), whose sum is σ = 38119320. Its totient is φ = 9985920.

The previous prime is 20151041. The next prime is 20151067. The reversal of 20151064 is 46015102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20151067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10242 + ... + 12049.

Almost surely, 2^20151064 is an apocalyptic number.

It is an amenable number.

20151064 is a deficient number, since it is larger than the sum of its proper divisors (17968256).

20151064 is a wasteful number, since it uses less digits than its factorization.

20151064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22410 (or 22406 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 20151064 is about 4488.9936511428. The cubic root of 20151064 is about 272.1234661508.

Adding to 20151064 its reverse (46015102), we get a palindrome (66166166).

The spelling of 20151064 in words is "twenty million, one hundred fifty-one thousand, sixty-four".