210113620 has 24 divisors (see below), whose sum is σ = 441731304. Its totient is φ = 83951616.

The previous prime is 210113611. The next prime is 210113621. The reversal of 210113620 is 26311012.

It can be written as a sum of positive squares in 4 ways, for example, as 121264144 + 88849476 = 11012^2 + 9426^2 .

It is a junction number, because it is equal to n+sod(n) for n = 210113594 and 210113603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210113621) 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, 14164 + ... + 24916.

It is an arithmetic number, because the mean of its divisors is an integer number (18405471).

Almost surely, 2^210113620 is an apocalyptic number.

210113620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210113620 is an abundant number, since it is smaller than the sum of its proper divisors (231617684).

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

210113620 is a wasteful number, since it uses less digits than its factorization.

210113620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11739 (or 11737 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 210113620 is about 14495.2964785133. The cubic root of 210113620 is about 594.4993741097.

Adding to 210113620 its reverse (26311012), we get a palindrome (236424632).

The spelling of 210113620 in words is "two hundred ten million, one hundred thirteen thousand, six hundred twenty".