78057130 has 32 divisors (see below), whose sum is σ = 151061760. Its totient is φ = 28946880.

The previous prime is 78057107. The next prime is 78057131. The reversal of 78057130 is 3175087.

It is a junction number, because it is equal to n+sod(n) for n = 78057092 and 78057101.

It is not an unprimeable number, because it can be changed into a prime (78057131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4560 + ... + 13300.

It is an arithmetic number, because the mean of its divisors is an integer number (4720680).

Almost surely, 2^78057130 is an apocalyptic number.

78057130 is a deficient number, since it is larger than the sum of its proper divisors (73004630).

78057130 is a wasteful number, since it uses less digits than its factorization.

78057130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8814.

The product of its (nonzero) digits is 5880, while the sum is 31.

The square root of 78057130 is about 8834.9946236543. The cubic root of 78057130 is about 427.3701576653.

It can be divided in two parts, 78057 and 130, that added together give a palindrome (78187).

The spelling of 78057130 in words is "seventy-eight million, fifty-seven thousand, one hundred thirty".