78463850 has 48 divisors (see below), whose sum is σ = 153974520. Its totient is φ = 29702400.

The previous prime is 78463841. The next prime is 78463859. The reversal of 78463850 is 5836487.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (78463841) and next prime (78463859).

It can be written as a sum of positive squares in 12 ways, for example, as 12967201 + 65496649 = 3601^2 + 8093^2 .

It is a junction number, because it is equal to n+sod(n) for n = 78463798 and 78463807.

It is not an unprimeable number, because it can be changed into a prime (78463859) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 76340 + ... + 77360.

Almost surely, 2^78463850 is an apocalyptic number.

78463850 is a deficient number, since it is larger than the sum of its proper divisors (75510670).

78463850 is a wasteful number, since it uses less digits than its factorization.

78463850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1115 (or 1110 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 41.

The square root of 78463850 is about 8857.9822758911. The cubic root of 78463850 is about 428.1111489649. Note that the first 4 decimals are identical.

The spelling of 78463850 in words is "seventy-eight million, four hundred sixty-three thousand, eight hundred fifty".