276163830 has 80 divisors (see below), whose sum is σ = 745398720. Its totient is φ = 73363968.

The previous prime is 276163813. The next prime is 276163831. The reversal of 276163830 is 38361672.

It is a happy number.

276163830 is a `hidden beast` number, since 2 + 7 + 616 + 3 + 8 + 30 = 666.

It is a super-2 number, since 2×276163830² = 152532922000537800, which contains 22 as substring.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (276163831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 296806 + ... + 297734.

It is an arithmetic number, because the mean of its divisors is an integer number (9317484).

Almost surely, 2^276163830 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 276163830, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (372699360).

276163830 is an abundant number, since it is smaller than the sum of its proper divisors (469234890).

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

276163830 is a wasteful number, since it uses less digits than its factorization.

276163830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1315 (or 1306 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The square root of 276163830 is about 16618.1776979307. The cubic root of 276163830 is about 651.2118064650.

The spelling of 276163830 in words is "two hundred seventy-six million, one hundred sixty-three thousand, eight hundred thirty".