276291972 has 72 divisors (see below), whose sum is σ = 790144992. Its totient is φ = 83721600.

The previous prime is 276291971. The next prime is 276292063. The reversal of 276291972 is 279192672.

276291972 is a `hidden beast` number, since 2 + 7 + 629 + 19 + 7 + 2 = 666.

It is not an unprimeable number, because it can be changed into a prime (276291971) 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, 2229 + ... + 23612.

It is an arithmetic number, because the mean of its divisors is an integer number (10974236).

Almost surely, 2^276291972 is an apocalyptic number.

276291972 is a gapful number since it is divisible by the number (22) 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 276291972, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (395072496).

276291972 is an abundant number, since it is smaller than the sum of its proper divisors (513853020).

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

276291972 is a wasteful number, since it uses less digits than its factorization.

276291972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25871 (or 25857 counting only the distinct ones).

The product of its digits is 190512, while the sum is 45.

The square root of 276291972 is about 16622.0327276780. The cubic root of 276291972 is about 651.3125132084.

The spelling of 276291972 in words is "two hundred seventy-six million, two hundred ninety-one thousand, nine hundred seventy-two".