20516152 has 8 divisors (see below), whose sum is σ = 38467800. Its totient is φ = 10258072.

The previous prime is 20516149. The next prime is 20516173. The reversal of 20516152 is 25161502.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent 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 as a sum of consecutive naturals, namely, 1282252 + ... + 1282267.

It is an arithmetic number, because the mean of its divisors is an integer number (4808475).

Almost surely, 2^20516152 is an apocalyptic number.

It is an amenable number.

20516152 is a deficient number, since it is larger than the sum of its proper divisors (17951648).

20516152 is a wasteful number, since it uses less digits than its factorization.

20516152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2564525 (or 2564521 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 20516152 is about 4529.4759078728. The cubic root of 20516152 is about 273.7570439449.

Adding to 20516152 its reverse (25161502), we get a palindrome (45677654).

The spelling of 20516152 in words is "twenty million, five hundred sixteen thousand, one hundred fifty-two".