78328635 has 64 divisors (see below), whose sum is σ = 158561280. Its totient is φ = 32071680.

The previous prime is 78328619. The next prime is 78328643. The reversal of 78328635 is 53682387.

It is not a de Polignac number, because 78328635 - 2⁴ = 78328619 is a prime.

It is a super-2 number, since 2×78328635² = 12270750121926450, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 83851 + ... + 84779.

It is an arithmetic number, because the mean of its divisors is an integer number (2477520).

Almost surely, 2^78328635 is an apocalyptic number.

78328635 is an abundant number, since it is smaller than the sum of its proper divisors (80232645).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

78328635 is a wasteful number, since it uses less digits than its factorization.

78328635 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1028.

The product of its digits is 241920, while the sum is 42.

The square root of 78328635 is about 8850.3466033823. The cubic root of 78328635 is about 427.8650894411.

The spelling of 78328635 in words is "seventy-eight million, three hundred twenty-eight thousand, six hundred thirty-five".