78056530 has 16 divisors (see below), whose sum is σ = 141289920. Its totient is φ = 31047472.

The previous prime is 78056527. The next prime is 78056533. The reversal of 78056530 is 3565087.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (78056527) and next prime (78056533).

It is not an unprimeable number, because it can be changed into a prime (78056533) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 20014 + ... + 23593.

It is an arithmetic number, because the mean of its divisors is an integer number (8830620).

Almost surely, 2^78056530 is an apocalyptic number.

78056530 is a deficient number, since it is larger than the sum of its proper divisors (63233390).

78056530 is a wasteful number, since it uses less digits than its factorization.

78056530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43793.

The product of its (nonzero) digits is 25200, while the sum is 34.

The square root of 78056530 is about 8834.9606677110. The cubic root of 78056530 is about 427.3690626437.

The spelling of 78056530 in words is "seventy-eight million, fifty-six thousand, five hundred thirty".