78578354 has 8 divisors (see below), whose sum is σ = 118121328. Its totient is φ = 39204580.

The previous prime is 78578321. The next prime is 78578359. The reversal of 78578354 is 45387587.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 78578299 and 78578308.

It is not an unprimeable number, because it can be changed into a prime (78578359) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41132 + ... + 42999.

It is an arithmetic number, because the mean of its divisors is an integer number (14765166).

Almost surely, 2^78578354 is an apocalyptic number.

78578354 is a deficient number, since it is larger than the sum of its proper divisors (39542974).

78578354 is a wasteful number, since it uses less digits than its factorization.

78578354 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84600.

The product of its digits is 940800, while the sum is 47.

The square root of 78578354 is about 8864.4432425280. The cubic root of 78578354 is about 428.3192983772.

The spelling of 78578354 in words is "seventy-eight million, five hundred seventy-eight thousand, three hundred fifty-four".