10721146 has 8 divisors (see below), whose sum is σ = 16190100. Its totient is φ = 5324448.

The previous prime is 10721143. The next prime is 10721153. The reversal of 10721146 is 64112701.

It can be written as a sum of positive squares in 2 ways, for example, as 10634121 + 87025 = 3261^2 + 295^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×10721146² = 229885943106632, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (10721141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17691 + ... + 18286.

Almost surely, 2^10721146 is an apocalyptic number.

10721146 is a deficient number, since it is larger than the sum of its proper divisors (5468954).

10721146 is a wasteful number, since it uses less digits than its factorization.

10721146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36128.

The product of its (nonzero) digits is 336, while the sum is 22.

The square root of 10721146 is about 3274.3161118011. The cubic root of 10721146 is about 220.5026111925.

Adding to 10721146 its reverse (64112701), we get a palindrome (74833847).

It can be divided in two parts, 107 and 21146, that multiplied together give a palindrome (2262622).

The spelling of 10721146 in words is "ten million, seven hundred twenty-one thousand, one hundred forty-six".