20115356 has 24 divisors (see below), whose sum is σ = 35852544. Its totient is φ = 9873920.

The previous prime is 20115353. The next prime is 20115367. The reversal of 20115356 is 65351102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20115353) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86216 + ... + 86448.

It is an arithmetic number, because the mean of its divisors is an integer number (1493856).

Almost surely, 2^20115356 is an apocalyptic number.

It is an amenable number.

20115356 is a deficient number, since it is larger than the sum of its proper divisors (15737188).

20115356 is a wasteful number, since it uses less digits than its factorization.

20115356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 541 (or 539 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 20115356 is about 4485.0146042126. The cubic root of 20115356 is about 271.9626354384.

Adding to 20115356 its reverse (65351102), we get a palindrome (85466458).

The spelling of 20115356 in words is "twenty million, one hundred fifteen thousand, three hundred fifty-six".