10099980 has 72 divisors (see below), whose sum is σ = 33428304. Its totient is φ = 2448000.

The previous prime is 10099979. The next prime is 10099997. The reversal of 10099980 is 8999001.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 571 + ... + 4530.

It is an arithmetic number, because the mean of its divisors is an integer number (464282).

Almost surely, 2^10099980 is an apocalyptic number.

10099980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 10099980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16714152).

10099980 is an abundant number, since it is smaller than the sum of its proper divisors (23328324).

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

10099980 is a wasteful number, since it uses less digits than its factorization.

10099980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5127 (or 5122 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 36.

The square root of 10099980 is about 3178.0465698287. The cubic root of 10099980 is about 216.1590906151.

The spelling of 10099980 in words is "ten million, ninety-nine thousand, nine hundred eighty".