10276721 has 36 divisors (see below), whose sum is σ = 13894092. Its totient is φ = 7547904.

The previous prime is 10276711. The next prime is 10276733. The reversal of 10276721 is 12767201.

It can be written as a sum of positive squares in 6 ways, for example, as 442225 + 9834496 = 665^2 + 3136^2 .

It is a de Polignac number, because none of the positive numbers 2^k-10276721 is a prime.

It is a super-2 number, since 2×10276721² = 211221989023682, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10276711) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 140741 + ... + 140813.

It is an arithmetic number, because the mean of its divisors is an integer number (385947).

Almost surely, 2^10276721 is an apocalyptic number.

It is an amenable number.

10276721 is a deficient number, since it is larger than the sum of its proper divisors (3617371).

10276721 is a wasteful number, since it uses less digits than its factorization.

10276721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130 (or 110 counting only the distinct ones).

The product of its (nonzero) digits is 1176, while the sum is 26.

The square root of 10276721 is about 3205.7325215932. The cubic root of 10276721 is about 217.4126729180.

The spelling of 10276721 in words is "ten million, two hundred seventy-six thousand, seven hundred twenty-one".