78125330 has 16 divisors (see below), whose sum is σ = 142553304. Its totient is φ = 30821760.

The previous prime is 78125329. The next prime is 78125393. The reversal of 78125330 is 3352187.

It can be written as a sum of positive squares in 4 ways, for example, as 42758521 + 35366809 = 6539^2 + 5947^2 .

It is a super-2 number, since 2×78125330² = 12207134375217800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 78125293 and 78125302.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52781 + ... + 54240.

Almost surely, 2^78125330 is an apocalyptic number.

78125330 is a deficient number, since it is larger than the sum of its proper divisors (64427974).

78125330 is a wasteful number, since it uses less digits than its factorization.

78125330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107101.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 78125330 is about 8838.8534324312. The cubic root of 78125330 is about 427.4945885799.

The spelling of 78125330 in words is "seventy-eight million, one hundred twenty-five thousand, three hundred thirty".