276139392 has 128 divisors (see below), whose sum is σ = 768549600. Its totient is φ = 87736320.

The previous prime is 276139379. The next prime is 276139393. The reversal of 276139392 is 293931672.

It is a tau number, because it is divible by the number of its divisors (128).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (276139393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1525542 + ... + 1525722.

Almost surely, 2^276139392 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 276139392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (384274800).

276139392 is an abundant number, since it is smaller than the sum of its proper divisors (492410208).

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

276139392 is a wasteful number, since it uses less digits than its factorization.

276139392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 364 (or 352 counting only the distinct ones).

The product of its digits is 122472, while the sum is 42.

The square root of 276139392 is about 16617.4424024878. The cubic root of 276139392 is about 651.1925971143.

The spelling of 276139392 in words is "two hundred seventy-six million, one hundred thirty-nine thousand, three hundred ninety-two".