276541380 has 72 divisors (see below), whose sum is σ = 888195672. Its totient is φ = 69405696.

The previous prime is 276541339. The next prime is 276541381. The reversal of 276541380 is 83145672.

276541380 is a `hidden beast` number, since 276 + 5 + 4 + 1 + 380 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 2903616 + 273637764 = 1704^2 + 16542^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (276541381) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 42127 + ... + 48246.

It is an arithmetic number, because the mean of its divisors is an integer number (12336051).

Almost surely, 2^276541380 is an apocalyptic number.

276541380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

276541380 is an abundant number, since it is smaller than the sum of its proper divisors (611654292).

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

276541380 is a wasteful number, since it uses less digits than its factorization.

276541380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90405 (or 90400 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 276541380 is about 16629.5333668747. The cubic root of 276541380 is about 651.5084336035.

The spelling of 276541380 in words is "two hundred seventy-six million, five hundred forty-one thousand, three hundred eighty".