78636950 has 24 divisors (see below), whose sum is σ = 167160432. Its totient is φ = 26961120.

The previous prime is 78636947. The next prime is 78636959. The reversal of 78636950 is 5963687.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78636959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 111989 + ... + 112688.

It is an arithmetic number, because the mean of its divisors is an integer number (6965018).

Almost surely, 2^78636950 is an apocalyptic number.

78636950 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

78636950 is an abundant number, since it is smaller than the sum of its proper divisors (88523482).

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

78636950 is a wasteful number, since it uses less digits than its factorization.

78636950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224696 (or 224691 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 44.

The square root of 78636950 is about 8867.7477411122. The cubic root of 78636950 is about 428.4257380450.

The spelling of 78636950 in words is "seventy-eight million, six hundred thirty-six thousand, nine hundred fifty".