10399320 has 64 divisors (see below), whose sum is σ = 34668000. Its totient is φ = 2772864.

The previous prime is 10399309. The next prime is 10399321. The reversal of 10399320 is 2399301.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a nialpdrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10399321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3735 + ... + 5894.

Almost surely, 2^10399320 is an apocalyptic number.

10399320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10399320 is an abundant number, since it is smaller than the sum of its proper divisors (24268680).

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

10399320 is a wasteful number, since it uses less digits than its factorization.

10399320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9649 (or 9639 counting only the distinct ones).

The product of its (nonzero) digits is 1458, while the sum is 27.

The square root of 10399320 is about 3224.7976680716. The cubic root of 10399320 is about 218.2738191549.

The spelling of 10399320 in words is "ten million, three hundred ninety-nine thousand, three hundred twenty".