10721386 has 16 divisors (see below), whose sum is σ = 17375904. Its totient is φ = 4932144.

The previous prime is 10721383. The next prime is 10721393. The reversal of 10721386 is 68312701.

It is a super-2 number, since 2×10721386² = 229896235521992, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (10721383) 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 7 ways as a sum of consecutive naturals, for example, 11701 + ... + 12583.

It is an arithmetic number, because the mean of its divisors is an integer number (1085994).

Almost surely, 2^10721386 is an apocalyptic number.

10721386 is a deficient number, since it is larger than the sum of its proper divisors (6654518).

10721386 is a wasteful number, since it uses less digits than its factorization.

10721386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1365.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 10721386 is about 3274.3527604704. The cubic root of 10721386 is about 220.5042565462.

The spelling of 10721386 in words is "ten million, seven hundred twenty-one thousand, three hundred eighty-six".