78857150 has 12 divisors (see below), whose sum is σ = 146674392. Its totient is φ = 31542840.

The previous prime is 78857147. The next prime is 78857167. The reversal of 78857150 is 5175887.

It is a super-2 number, since 2×78857150² = 12436900212245000, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 78857098 and 78857107.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 788522 + ... + 788621.

It is an arithmetic number, because the mean of its divisors is an integer number (12222866).

Almost surely, 2^78857150 is an apocalyptic number.

78857150 is a deficient number, since it is larger than the sum of its proper divisors (67817242).

78857150 is a wasteful number, since it uses less digits than its factorization.

78857150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1577155 (or 1577150 counting only the distinct ones).

The product of its (nonzero) digits is 78400, while the sum is 41.

The square root of 78857150 is about 8880.1548409924. The cubic root of 78857150 is about 428.8252594218.

The spelling of 78857150 in words is "seventy-eight million, eight hundred fifty-seven thousand, one hundred fifty".