100099280 has 40 divisors (see below), whose sum is σ = 233985024. Its totient is φ = 39824000.

The previous prime is 100099267. The next prime is 100099283. The reversal of 100099280 is 82990001.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100099283) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12005 + ... + 18555.

Almost surely, 2^100099280 is an apocalyptic number.

100099280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100099280 is an abundant number, since it is smaller than the sum of its proper divisors (133885744).

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

100099280 is a wasteful number, since it uses less digits than its factorization.

100099280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6755 (or 6749 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 29.

The square root of 100099280 is about 10004.9627685464. The cubic root of 100099280 is about 464.3124382025.

The spelling of 100099280 in words is "one hundred million, ninety-nine thousand, two hundred eighty".