20136210 has 32 divisors (see below), whose sum is σ = 49358592. Its totient is φ = 5255040.

The previous prime is 20136197. The next prime is 20136217. The reversal of 20136210 is 1263102.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 20136210.

It is not an unprimeable number, because it can be changed into a prime (20136217) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5731 + ... + 8550.

It is an arithmetic number, because the mean of its divisors is an integer number (1542456).

Almost surely, 2^20136210 is an apocalyptic number.

20136210 is an abundant number, since it is smaller than the sum of its proper divisors (29222382).

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

20136210 is a wasteful number, since it uses less digits than its factorization.

20136210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14338.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 20136210 is about 4487.3388550454. The cubic root of 20136210 is about 272.0565860501.

Adding to 20136210 its reverse (1263102), we get a palindrome (21399312).

The spelling of 20136210 in words is "twenty million, one hundred thirty-six thousand, two hundred ten".