61244080 has 40 divisors (see below), whose sum is σ = 144356832. Its totient is φ = 24159744.

The previous prime is 61244063. The next prime is 61244093. The reversal of 61244080 is 8044216.

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 597 + ... + 11083.

Almost surely, 2^61244080 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61244080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72178416).

61244080 is an abundant number, since it is smaller than the sum of its proper divisors (83112752).

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

61244080 is a wasteful number, since it uses less digits than its factorization.

61244080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10573 (or 10567 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 25.

The square root of 61244080 is about 7825.8596971834. The cubic root of 61244080 is about 394.1740579605.

Adding to 61244080 its reverse (8044216), we get a palindrome (69288296).

The spelling of 61244080 in words is "sixty-one million, two hundred forty-four thousand, eighty".