78854372 has 12 divisors (see below), whose sum is σ = 138697020. Its totient is φ = 39226656.

The previous prime is 78854371. The next prime is 78854401. The reversal of 78854372 is 27345887.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 73170916 + 5683456 = 8554^2 + 2384^2 .

It is not an unprimeable number, because it can be changed into a prime (78854371) 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 3 ways as a sum of consecutive naturals, for example, 49247 + ... + 50822.

It is an arithmetic number, because the mean of its divisors is an integer number (11558085).

Almost surely, 2^78854372 is an apocalyptic number.

It is an amenable number.

78854372 is a deficient number, since it is larger than the sum of its proper divisors (59842648).

78854372 is a wasteful number, since it uses less digits than its factorization.

78854372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100270 (or 100268 counting only the distinct ones).

The product of its digits is 376320, while the sum is 44.

The square root of 78854372 is about 8879.9984234233. The cubic root of 78854372 is about 428.8202237737.

The spelling of 78854372 in words is "seventy-eight million, eight hundred fifty-four thousand, three hundred seventy-two".