61128944 has 20 divisors (see below), whose sum is σ = 119527320. Its totient is φ = 30283200.

The previous prime is 61128913. The next prime is 61128961. The reversal of 61128944 is 44982116.

It is a happy number.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 15782 + ... + 19269.

It is an arithmetic number, because the mean of its divisors is an integer number (5976366).

Almost surely, 2^61128944 is an apocalyptic number.

It is an amenable number.

61128944 is a deficient number, since it is larger than the sum of its proper divisors (58398376).

61128944 is a wasteful number, since it uses less digits than its factorization.

61128944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35168 (or 35162 counting only the distinct ones).

The product of its digits is 13824, while the sum is 35.

The square root of 61128944 is about 7818.5001119140. The cubic root of 61128944 is about 393.9268934249.

The spelling of 61128944 in words is "sixty-one million, one hundred twenty-eight thousand, nine hundred forty-four".