10199720 has 16 divisors (see below), whose sum is σ = 22949460. Its totient is φ = 4079872.

The previous prime is 10199701. The next prime is 10199767. The reversal of 10199720 is 2799101.

It can be written as a sum of positive squares in 2 ways, for example, as 9947716 + 252004 = 3154^2 + 502^2 .

It is an unprimeable number.

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, 127457 + ... + 127536.

Almost surely, 2^10199720 is an apocalyptic number.

10199720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10199720 is an abundant number, since it is smaller than the sum of its proper divisors (12749740).

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

10199720 is a wasteful number, since it uses less digits than its factorization.

10199720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255004 (or 255000 counting only the distinct ones).

The product of its (nonzero) digits is 1134, while the sum is 29.

The square root of 10199720 is about 3193.7000485330. The cubic root of 10199720 is about 216.8683040728.

The spelling of 10199720 in words is "ten million, one hundred ninety-nine thousand, seven hundred twenty".