78008250 has 64 divisors (see below), whose sum is σ = 198941184. Its totient is φ = 20350400.

The previous prime is 78008239. The next prime is 78008263. The reversal of 78008250 is 5280087.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 34144 + ... + 36356.

It is an arithmetic number, because the mean of its divisors is an integer number (3108456).

Almost surely, 2^78008250 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78008250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99470592).

78008250 is an abundant number, since it is smaller than the sum of its proper divisors (120932934).

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

78008250 is a wasteful number, since it uses less digits than its factorization.

78008250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2280 (or 2270 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 30.

The square root of 78008250 is about 8832.2279182548. The cubic root of 78008250 is about 427.2809314995.

The spelling of 78008250 in words is "seventy-eight million, eight thousand, two hundred fifty".