78785630 has 96 divisors (see below), whose sum is σ = 184384512. Its totient is φ = 23956800.

The previous prime is 78785621. The next prime is 78785653. The reversal of 78785630 is 3658787.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 253175 + ... + 253485.

It is an arithmetic number, because the mean of its divisors is an integer number (1920672).

Almost surely, 2^78785630 is an apocalyptic number.

78785630 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

78785630 is an abundant number, since it is smaller than the sum of its proper divisors (105598882).

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

78785630 is a wasteful number, since it uses less digits than its factorization.

78785630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390 (or 383 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 44.

The square root of 78785630 is about 8876.1269707007. The cubic root of 78785630 is about 428.6955782653.

The spelling of 78785630 in words is "seventy-eight million, seven hundred eighty-five thousand, six hundred thirty".