276721872 has 120 divisors (see below), whose sum is σ = 845178048. Its totient is φ = 76423680.

The previous prime is 276721847. The next prime is 276721873. The reversal of 276721872 is 278127672.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a nude number because it is divisible by every one of its digits.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (276721873) 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 23 ways as a sum of consecutive naturals, for example, 322468 + ... + 323324.

Almost surely, 2^276721872 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 276721872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (422589024).

276721872 is an abundant number, since it is smaller than the sum of its proper divisors (568456176).

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

276721872 is a wasteful number, since it uses less digits than its factorization.

276721872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 937 (or 900 counting only the distinct ones).

The product of its digits is 131712, while the sum is 42.

The square root of 276721872 is about 16634.9593326825. The cubic root of 276721872 is about 651.6501441452.

The spelling of 276721872 in words is "two hundred seventy-six million, seven hundred twenty-one thousand, eight hundred seventy-two".