78867130 has 16 divisors (see below), whose sum is σ = 142748424. Its totient is φ = 31371840.

The previous prime is 78867121. The next prime is 78867133. The reversal of 78867130 is 3176887.

It can be written as a sum of positive squares in 4 ways, for example, as 12623809 + 66243321 = 3553^2 + 8139^2 .

It is not an unprimeable number, because it can be changed into a prime (78867133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19977 + ... + 23596.

Almost surely, 2^78867130 is an apocalyptic number.

78867130 is a deficient number, since it is larger than the sum of its proper divisors (63881294).

78867130 is a wasteful number, since it uses less digits than its factorization.

78867130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43761.

The product of its (nonzero) digits is 56448, while the sum is 40.

The square root of 78867130 is about 8880.7167503530. The cubic root of 78867130 is about 428.8433490753.

The spelling of 78867130 in words is "seventy-eight million, eight hundred sixty-seven thousand, one hundred thirty".