78449150 has 24 divisors (see below), whose sum is σ = 157140984. Its totient is φ = 28965600.

The previous prime is 78449149. The next prime is 78449171. The reversal of 78449150 is 5194487.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 59696 + ... + 60995.

It is an arithmetic number, because the mean of its divisors is an integer number (6547541).

Almost surely, 2^78449150 is an apocalyptic number.

78449150 is an abundant number, since it is smaller than the sum of its proper divisors (78691834).

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

78449150 is a wasteful number, since it uses less digits than its factorization.

78449150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120716 (or 120711 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 38.

The square root of 78449150 is about 8857.1524769533. The cubic root of 78449150 is about 428.0844121218.

The spelling of 78449150 in words is "seventy-eight million, four hundred forty-nine thousand, one hundred fifty".