276638790 has 64 divisors (see below), whose sum is σ = 705640896. Its totient is φ = 69169152.

The previous prime is 276638777. The next prime is 276638797. The reversal of 276638790 is 97836672.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (276638797) 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 31 ways as a sum of consecutive naturals, for example, 158764 + ... + 160496.

It is an arithmetic number, because the mean of its divisors is an integer number (11025639).

Almost surely, 2^276638790 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 276638790, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (352820448).

276638790 is an abundant number, since it is smaller than the sum of its proper divisors (429002106).

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

276638790 is a wasteful number, since it uses less digits than its factorization.

276638790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2073.

The product of its (nonzero) digits is 762048, while the sum is 48.

The square root of 276638790 is about 16632.4619344221. The cubic root of 276638790 is about 651.5849212362.

The spelling of 276638790 in words is "two hundred seventy-six million, six hundred thirty-eight thousand, seven hundred ninety".