276100020 has 216 divisors, whose sum is σ = 1011838464. Its totient is φ = 59688576.

The previous prime is 276099997. The next prime is 276100021. The reversal of 276100020 is 20001672.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 276099966 and 276100002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (276100021) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 454557 + ... + 455163.

Almost surely, 2^276100020 is an apocalyptic number.

276100020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 276100020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (505919232).

276100020 is an abundant number, since it is smaller than the sum of its proper divisors (735738444).

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

276100020 is a wasteful number, since it uses less digits than its factorization.

276100020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 667 (or 643 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 18.

The square root of 276100020 is about 16616.2577014200. The cubic root of 276100020 is about 651.1616465941.

Adding to 276100020 its reverse (20001672), we get a palindrome (296101692).

The spelling of 276100020 in words is "two hundred seventy-six million, one hundred thousand, twenty".