10721736 has 24 divisors (see below), whose sum is σ = 29038230. Its totient is φ = 3573888.

The previous prime is 10721731. The next prime is 10721743. The reversal of 10721736 is 63712701.

It can be written as a sum of positive squares in only one way, i.e., 9922500 + 799236 = 3150^2 + 894^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-2 number, since 2×10721736² = 229911245707392, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (10721731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 74385 + ... + 74528.

Almost surely, 2^10721736 is an apocalyptic number.

It is an amenable number.

10721736 is an abundant number, since it is smaller than the sum of its proper divisors (18316494).

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

10721736 is a wasteful number, since it uses less digits than its factorization.

10721736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148925 (or 148918 counting only the distinct ones).

The product of its (nonzero) digits is 1764, while the sum is 27.

The square root of 10721736 is about 3274.4062057112. The cubic root of 10721736 is about 220.5066559763.

The spelling of 10721736 in words is "ten million, seven hundred twenty-one thousand, seven hundred thirty-six".