78204006 has 12 divisors (see below), whose sum is σ = 169442052. Its totient is φ = 26067996.

The previous prime is 78204001. The next prime is 78204017. The reversal of 78204006 is 60040287.

It is a super-2 number, since 2×78204006² = 12231733108896072, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78204001) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2172316 + ... + 2172351.

It is an arithmetic number, because the mean of its divisors is an integer number (14120171).

Almost surely, 2^78204006 is an apocalyptic number.

78204006 is an abundant number, since it is smaller than the sum of its proper divisors (91238046).

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

78204006 is a wasteful number, since it uses less digits than its factorization.

78204006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4344675 (or 4344672 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 78204006 is about 8843.3028897579. The cubic root of 78204006 is about 427.6380430367.

The spelling of 78204006 in words is "seventy-eight million, two hundred four thousand, six".