61308028 has 12 divisors (see below), whose sum is σ = 108759280. Its totient is φ = 30233952.

The previous prime is 61308017. The next prime is 61308053. The reversal of 61308028 is 82080316.

It is a junction number, because it is equal to n+sod(n) for n = 61307987 and 61308005.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 104688 + ... + 105271.

Almost surely, 2^61308028 is an apocalyptic number.

It is an amenable number.

61308028 is a deficient number, since it is larger than the sum of its proper divisors (47451252).

61308028 is a wasteful number, since it uses less digits than its factorization.

61308028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210036 (or 210034 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 61308028 is about 7829.9443165325. The cubic root of 61308028 is about 394.3112025061.

The spelling of 61308028 in words is "sixty-one million, three hundred eight thousand, twenty-eight".