78204568 has 64 divisors (see below), whose sum is σ = 165150720. Its totient is φ = 34473600.

The previous prime is 78204541. The next prime is 78204593. The reversal of 78204568 is 86540287.

It is a super-2 number, since 2×78204568² = 12231908912133248, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 78204568.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 409353 + ... + 409543.

It is an arithmetic number, because the mean of its divisors is an integer number (2580480).

Almost surely, 2^78204568 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78204568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82575360).

78204568 is an abundant number, since it is smaller than the sum of its proper divisors (86946152).

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

78204568 is a wasteful number, since it uses less digits than its factorization.

78204568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 368 (or 364 counting only the distinct ones).

The product of its (nonzero) digits is 107520, while the sum is 40.

The square root of 78204568 is about 8843.3346651588. The cubic root of 78204568 is about 427.6390674174.

The spelling of 78204568 in words is "seventy-eight million, two hundred four thousand, five hundred sixty-eight".