61216230 has 16 divisors (see below), whose sum is σ = 146919024. Its totient is φ = 16324320.

The previous prime is 61216213. The next prime is 61216237. The reversal of 61216230 is 3261216.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 61216197 and 61216206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61216237) 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, 1020241 + ... + 1020300.

It is an arithmetic number, because the mean of its divisors is an integer number (9182439).

Almost surely, 2^61216230 is an apocalyptic number.

61216230 is an abundant number, since it is smaller than the sum of its proper divisors (85702794).

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

61216230 is a wasteful number, since it uses less digits than its factorization.

61216230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2040551.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 61216230 is about 7824.0801376264. The cubic root of 61216230 is about 394.1143002830.

Adding to 61216230 its reverse (3261216), we get a palindrome (64477446).

The spelling of 61216230 in words is "sixty-one million, two hundred sixteen thousand, two hundred thirty".