276004640 has 96 divisors (see below), whose sum is σ = 691830720. Its totient is φ = 103762944.

The previous prime is 276004637. The next prime is 276004643. The reversal of 276004640 is 46400672.

It is an interprime number because it is at equal distance from previous prime (276004637) and next prime (276004643).

It is a super-2 number, since 2×276004640² = 152357122603059200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (276004643) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 495242 + ... + 495798.

It is an arithmetic number, because the mean of its divisors is an integer number (7206570).

Almost surely, 2^276004640 is an apocalyptic number.

276004640 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 276004640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (345915360).

276004640 is an abundant number, since it is smaller than the sum of its proper divisors (415826080).

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

276004640 is a wasteful number, since it uses less digits than its factorization.

276004640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 754 (or 746 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 29.

The square root of 276004640 is about 16613.3873728388. The cubic root of 276004640 is about 651.0866557133.

The spelling of 276004640 in words is "two hundred seventy-six million, four thousand, six hundred forty".