78061028 has 12 divisors (see below), whose sum is σ = 137478012. Its totient is φ = 38781600.

The previous prime is 78061003. The next prime is 78061033. The reversal of 78061028 is 82016087.

It can be written as a sum of positive squares in 2 ways, for example, as 50098084 + 27962944 = 7078^2 + 5288^2 .

It is a junction number, because it is equal to n+sod(n) for n = 78060985 and 78061003.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61523 + ... + 62778.

It is an arithmetic number, because the mean of its divisors is an integer number (11456501).

Almost surely, 2^78061028 is an apocalyptic number.

It is an amenable number.

78061028 is a deficient number, since it is larger than the sum of its proper divisors (59416984).

78061028 is a wasteful number, since it uses less digits than its factorization.

78061028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124462 (or 124460 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 32.

The square root of 78061028 is about 8835.2152209213. The cubic root of 78061028 is about 427.3772715196.

The spelling of 78061028 in words is "seventy-eight million, sixty-one thousand, twenty-eight".