61504288 has 24 divisors (see below), whose sum is σ = 121634352. Its totient is φ = 30613056.

The previous prime is 61504271. The next prime is 61504297. The reversal of 61504288 is 88240516.

61504288 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 3031 + ... + 11497.

It is an arithmetic number, because the mean of its divisors is an integer number (5068098).

Almost surely, 2^61504288 is an apocalyptic number.

It is an amenable number.

61504288 is a deficient number, since it is larger than the sum of its proper divisors (60130064).

61504288 is a wasteful number, since it uses less digits than its factorization.

61504288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8704 (or 8696 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 34.

The square root of 61504288 is about 7842.4669588083. The cubic root of 61504288 is about 394.7315122530.

The spelling of 61504288 in words is "sixty-one million, five hundred four thousand, two hundred eighty-eight".