276406780 has 48 divisors (see below), whose sum is σ = 633064320. Its totient is φ = 100758528.

The previous prime is 276406769. The next prime is 276406817. The reversal of 276406780 is 87604672.

276406780 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13812 + ... + 27268.

It is an arithmetic number, because the mean of its divisors is an integer number (13188840).

Almost surely, 2^276406780 is an apocalyptic number.

276406780 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 276406780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (316532160).

276406780 is an abundant number, since it is smaller than the sum of its proper divisors (356657540).

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

276406780 is a wasteful number, since it uses less digits than its factorization.

276406780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13558 (or 13556 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 40.

The square root of 276406780 is about 16625.4858575622. The cubic root of 276406780 is about 651.4027143238.

The spelling of 276406780 in words is "two hundred seventy-six million, four hundred six thousand, seven hundred eighty".