10921730 has 8 divisors (see below), whose sum is σ = 19659132. Its totient is φ = 4368688.

The previous prime is 10921727. The next prime is 10921739. The reversal of 10921730 is 3712901.

It can be written as a sum of positive squares in 2 ways, for example, as 10778089 + 143641 = 3283^2 + 379^2 .

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 10921696 and 10921705.

It is not an unprimeable number, because it can be changed into a prime (10921739) 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, 546077 + ... + 546096.

Almost surely, 2^10921730 is an apocalyptic number.

10921730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

10921730 is a deficient number, since it is larger than the sum of its proper divisors (8737402).

10921730 is a wasteful number, since it uses less digits than its factorization.

10921730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1092180.

The product of its (nonzero) digits is 378, while the sum is 23.

The square root of 10921730 is about 3304.8040789130. The cubic root of 10921730 is about 221.8692653414.

The spelling of 10921730 in words is "ten million, nine hundred twenty-one thousand, seven hundred thirty".