78168204 has 36 divisors (see below), whose sum is σ = 207993240. Its totient is φ = 24684480.

The previous prime is 78168199. The next prime is 78168217. The reversal of 78168204 is 40286187.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×78168204² = 12220536233171232, which contains 22 as substring.

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

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 56457 + ... + 57824.

It is an arithmetic number, because the mean of its divisors is an integer number (5777590).

Almost surely, 2^78168204 is an apocalyptic number.

It is an amenable number.

78168204 is an abundant number, since it is smaller than the sum of its proper divisors (129825036).

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

78168204 is a wasteful number, since it uses less digits than its factorization.

78168204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114310 (or 114305 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 36.

The square root of 78168204 is about 8841.2784143471. The cubic root of 78168204 is about 427.5727751348.

The spelling of 78168204 in words is "seventy-eight million, one hundred sixty-eight thousand, two hundred four".