78288054 has 16 divisors (see below), whose sum is σ = 168620592. Its totient is φ = 24088608.

The previous prime is 78288053. The next prime is 78288059. The reversal of 78288054 is 45088287.

It is a super-2 number, since 2×78288054² = 12258038798213832, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 78287997 and 78288015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78288053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 501769 + ... + 501924.

It is an arithmetic number, because the mean of its divisors is an integer number (10538787).

Almost surely, 2^78288054 is an apocalyptic number.

78288054 is an abundant number, since it is smaller than the sum of its proper divisors (90332538).

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

78288054 is a wasteful number, since it uses less digits than its factorization.

78288054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1003711.

The product of its (nonzero) digits is 143360, while the sum is 42.

The square root of 78288054 is about 8848.0536842856. The cubic root of 78288054 is about 427.7911863166.

The spelling of 78288054 in words is "seventy-eight million, two hundred eighty-eight thousand, fifty-four".