10391864 has 16 divisors (see below), whose sum is σ = 22268400. Its totient is φ = 4453632.

The previous prime is 10391863. The next prime is 10391867. The reversal of 10391864 is 46819301.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 10391864.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10391863) 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 3 ways as a sum of consecutive naturals, for example, 92729 + ... + 92840.

It is an arithmetic number, because the mean of its divisors is an integer number (1391775).

Almost surely, 2^10391864 is an apocalyptic number.

10391864 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

10391864 is an abundant number, since it is smaller than the sum of its proper divisors (11876536).

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

10391864 is a wasteful number, since it uses less digits than its factorization.

10391864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185582 (or 185578 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 10391864 is about 3223.6414192649. The cubic root of 10391864 is about 218.2216414262.

The spelling of 10391864 in words is "ten million, three hundred ninety-one thousand, eight hundred sixty-four".