78204306 has 8 divisors (see below), whose sum is σ = 156408624. Its totient is φ = 26068100.

The previous prime is 78204293. The next prime is 78204311. The reversal of 78204306 is 60340287.

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

78204306 is an admirable number.

It is a super-2 number, since 2×78204306² = 12231826953883272, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6517020 + ... + 6517031.

It is an arithmetic number, because the mean of its divisors is an integer number (19551078).

Almost surely, 2^78204306 is an apocalyptic number.

78204306 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

78204306 is a wasteful number, since it uses less digits than its factorization.

78204306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13034056.

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 78204306 is about 8843.3198517299. The cubic root of 78204306 is about 427.6385898598.

The spelling of 78204306 in words is "seventy-eight million, two hundred four thousand, three hundred six".