548139312 has 400 divisors, whose sum is σ = 1970445312. Its totient is φ = 143700480.

The previous prime is 548139311. The next prime is 548139343. The reversal of 548139312 is 213931845.

548139312 is a `hidden beast` number, since 548 + 13 + 93 + 12 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (548139311) 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 79 ways as a sum of consecutive naturals, for example, 7720237 + ... + 7720307.

Almost surely, 2^548139312 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 548139312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (985222656).

548139312 is an abundant number, since it is smaller than the sum of its proper divisors (1422306000).

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

548139312 is a wasteful number, since it uses less digits than its factorization.

548139312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158 (or 143 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 548139312 is about 23412.3751892028. The cubic root of 548139312 is about 818.3962865648.

The spelling of 548139312 in words is "five hundred forty-eight million, one hundred thirty-nine thousand, three hundred twelve".