100867720 has 16 divisors (see below), whose sum is σ = 226952460. Its totient is φ = 40347072.

The previous prime is 100867649. The next prime is 100867733. The reversal of 100867720 is 27768001.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 100761444 + 106276 = 10038^2 + 326^2 .

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, 1260807 + ... + 1260886.

Almost surely, 2^100867720 is an apocalyptic number.

100867720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100867720 is an abundant number, since it is smaller than the sum of its proper divisors (126084740).

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

100867720 is a wasteful number, since it uses less digits than its factorization.

100867720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2521704 (or 2521700 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 31.

The square root of 100867720 is about 10043.2922888861. The cubic root of 100867720 is about 465.4975519844.

The spelling of 100867720 in words is "one hundred million, eight hundred sixty-seven thousand, seven hundred twenty".