78254592 has 80 divisors (see below), whose sum is σ = 224568960. Its totient is φ = 24072192.

The previous prime is 78254563. The next prime is 78254629. The reversal of 78254592 is 29545287.

It is a super-2 number, since 2×78254592² = 12247562338172928, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18009 + ... + 21927.

It is an arithmetic number, because the mean of its divisors is an integer number (2807112).

Almost surely, 2^78254592 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 78254592, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (112284480).

78254592 is an abundant number, since it is smaller than the sum of its proper divisors (146314368).

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

78254592 is a wasteful number, since it uses less digits than its factorization.

78254592 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3953 (or 3937 counting only the distinct ones).

The product of its digits is 201600, while the sum is 42.

The square root of 78254592 is about 8846.1625578552. The cubic root of 78254592 is about 427.7302285761.

The spelling of 78254592 in words is "seventy-eight million, two hundred fifty-four thousand, five hundred ninety-two".