78426630 has 40 divisors (see below), whose sum is σ = 210882672. Its totient is φ = 20913552.

The previous prime is 78426629. The next prime is 78426631. The reversal of 78426630 is 3662487.

It is an interprime number because it is at equal distance from previous prime (78426629) and next prime (78426631).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78426631) 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 19 ways as a sum of consecutive naturals, for example, 47602 + ... + 49221.

Almost surely, 2^78426630 is an apocalyptic number.

78426630 is an abundant number, since it is smaller than the sum of its proper divisors (132456042).

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

78426630 is a wasteful number, since it uses less digits than its factorization.

78426630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96842 (or 96833 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 36.

The square root of 78426630 is about 8855.8810967628. The cubic root of 78426630 is about 428.0434455272.

The spelling of 78426630 in words is "seventy-eight million, four hundred twenty-six thousand, six hundred thirty".