61210230 has 64 divisors (see below), whose sum is σ = 151305408. Its totient is φ = 15841280.

The previous prime is 61210207. The next prime is 61210231. The reversal of 61210230 is 3201216.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61210231) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 217690 + ... + 217970.

It is an arithmetic number, because the mean of its divisors is an integer number (2364147).

Almost surely, 2^61210230 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61210230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75652704).

61210230 is an abundant number, since it is smaller than the sum of its proper divisors (90095178).

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

61210230 is a wasteful number, since it uses less digits than its factorization.

61210230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 481.

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

The square root of 61210230 is about 7823.6966965751. The cubic root of 61210230 is about 394.1014237247.

Adding to 61210230 its reverse (3201216), we get a palindrome (64411446).

The spelling of 61210230 in words is "sixty-one million, two hundred ten thousand, two hundred thirty".