61328 has 10 divisors (see below), whose sum is σ = 118854. Its totient is φ = 30656.

The previous prime is 61297. The next prime is 61331. The reversal of 61328 is 82316.

It can be written as a sum of positive squares in only one way, i.e., 44944 + 16384 = 212^2 + 128^2 .

It is a super-2 number, since 2×61328² = 7522247168, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1901 + ... + 1932.

2⁶¹³²⁸ is an apocalyptic number.

It is an amenable number.

61328 is a deficient number, since it is larger than the sum of its proper divisors (57526).

61328 is a wasteful number, since it uses less digits than its factorization.

61328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3841 (or 3835 counting only the distinct ones).

The product of its digits is 288, while the sum is 20.

The square root of 61328 is about 247.6449070746. The cubic root of 61328 is about 39.4354015433.

Adding to 61328 its product of digits (288), we get a palindrome (61616).

The spelling of 61328 in words is "sixty-one thousand, three hundred twenty-eight".