61488420 has 96 divisors (see below), whose sum is σ = 197842176. Its totient is φ = 13977600.

The previous prime is 61488403. The next prime is 61488431. The reversal of 61488420 is 2488416.

61488420 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 31 ways as a sum of consecutive naturals, for example, 117760 + ... + 118280.

It is an arithmetic number, because the mean of its divisors is an integer number (2060856).

Almost surely, 2^61488420 is an apocalyptic number.

61488420 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61488420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98921088).

61488420 is an abundant number, since it is smaller than the sum of its proper divisors (136353756).

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

61488420 is a wasteful number, since it uses less digits than its factorization.

61488420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 821 (or 819 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 33.

The square root of 61488420 is about 7841.4552220873. The cubic root of 61488420 is about 394.6975626506.

The spelling of 61488420 in words is "sixty-one million, four hundred eighty-eight thousand, four hundred twenty".