61890224 has 30 divisors (see below), whose sum is σ = 131034396. Its totient is φ = 28084480.

The previous prime is 61890223. The next prime is 61890247. The reversal of 61890224 is 42209816.

61890224 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (61890221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 104072 + ... + 104664.

Almost surely, 2^61890224 is an apocalyptic number.

It is an amenable number.

61890224 is an abundant number, since it is smaller than the sum of its proper divisors (69144172).

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

61890224 is an equidigital number, since it uses as much as digits as its factorization.

61890224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1205 (or 606 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 61890224 is about 7867.0340027230. The cubic root of 61890224 is about 395.5554307583. Note that the first 3 decimals are identical.

The spelling of 61890224 in words is "sixty-one million, eight hundred ninety thousand, two hundred twenty-four".