20115354 has 16 divisors (see below), whose sum is σ = 45978048. Its totient is φ = 5747232.

The previous prime is 20115353. The next prime is 20115367. The reversal of 20115354 is 45351102.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 20115354.

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, 239427 + ... + 239510.

It is an arithmetic number, because the mean of its divisors is an integer number (2873628).

Almost surely, 2^20115354 is an apocalyptic number.

20115354 is an abundant number, since it is smaller than the sum of its proper divisors (25862694).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20115354 is a wasteful number, since it uses less digits than its factorization.

20115354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 478949.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 20115354 is about 4485.0143812478. The cubic root of 20115354 is about 271.9626264250.

Adding to 20115354 its reverse (45351102), we get a palindrome (65466456).

The spelling of 20115354 in words is "twenty million, one hundred fifteen thousand, three hundred fifty-four".