20513102 has 8 divisors (see below), whose sum is σ = 32107536. Its totient is φ = 9810592.

The previous prime is 20513093. The next prime is 20513113. The reversal of 20513102 is 20131502.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 222923 + ... + 223014.

It is an arithmetic number, because the mean of its divisors is an integer number (4013442).

Almost surely, 2^20513102 is an apocalyptic number.

20513102 is a deficient number, since it is larger than the sum of its proper divisors (11594434).

20513102 is a wasteful number, since it uses less digits than its factorization.

20513102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 445962.

The product of its (nonzero) digits is 60, while the sum is 14.

The square root of 20513102 is about 4529.1392118150. The cubic root of 20513102 is about 273.7434773923.

Adding to 20513102 its reverse (20131502), we get a palindrome (40644604).

The spelling of 20513102 in words is "twenty million, five hundred thirteen thousand, one hundred two".