78671250 has 240 divisors, whose sum is σ = 259267008. Its totient is φ = 17496000.

The previous prime is 78671233. The next prime is 78671261. The reversal of 78671250 is 5217687.

It is an unprimeable number.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 2126232 + ... + 2126268.

Almost surely, 2^78671250 is an apocalyptic number.

78671250 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 78671250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (129633504).

78671250 is an abundant number, since it is smaller than the sum of its proper divisors (180595758).

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

78671250 is an equidigital number, since it uses as much as digits as its factorization.

78671250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81 (or 54 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 36.

The square root of 78671250 is about 8869.6815049922. The cubic root of 78671250 is about 428.4880194822.

The spelling of 78671250 in words is "seventy-eight million, six hundred seventy-one thousand, two hundred fifty".