78851340 has 48 divisors (see below), whose sum is σ = 245316960. Its totient is φ = 21026880.

The previous prime is 78851299. The next prime is 78851347. The reversal of 78851340 is 4315887.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 78851295 and 78851304.

It is not an unprimeable number, because it can be changed into a prime (78851347) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 72471 + ... + 73550.

It is an arithmetic number, because the mean of its divisors is an integer number (5110770).

Almost surely, 2^78851340 is an apocalyptic number.

It is an amenable number.

78851340 is an abundant number, since it is smaller than the sum of its proper divisors (166465620).

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

78851340 is a wasteful number, since it uses less digits than its factorization.

78851340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146039 (or 146031 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 36.

The square root of 78851340 is about 8879.8277010311. The cubic root of 78851340 is about 428.8147275679.

The spelling of 78851340 in words is "seventy-eight million, eight hundred fifty-one thousand, three hundred forty".