10099780 has 12 divisors (see below), whose sum is σ = 21209580. Its totient is φ = 4039904.

The previous prime is 10099763. The next prime is 10099799. The reversal of 10099780 is 8799001.

It can be written as a sum of positive squares in 2 ways, for example, as 1420864 + 8678916 = 1192^2 + 2946^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 252475 + ... + 252514.

It is an arithmetic number, because the mean of its divisors is an integer number (1767465).

Almost surely, 2^10099780 is an apocalyptic number.

10099780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10099780 is an abundant number, since it is smaller than the sum of its proper divisors (11109800).

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

10099780 is a wasteful number, since it uses less digits than its factorization.

10099780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 504998 (or 504996 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 34.

The square root of 10099780 is about 3178.0151038030. The cubic root of 10099780 is about 216.1576638101.

The spelling of 10099780 in words is "ten million, ninety-nine thousand, seven hundred eighty".