100980815 has 16 divisors (see below), whose sum is σ = 132342336. Its totient is φ = 73516800.

The previous prime is 100980809. The next prime is 100980829. The reversal of 100980815 is 518089001.

It is a happy number.

It is not a de Polignac number, because 100980815 - 2⁶ = 100980751 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6326 + ... + 15555.

It is an arithmetic number, because the mean of its divisors is an integer number (8271396).

Almost surely, 2^100980815 is an apocalyptic number.

100980815 is a deficient number, since it is larger than the sum of its proper divisors (31361521).

100980815 is a wasteful number, since it uses less digits than its factorization.

100980815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21970.

The product of its (nonzero) digits is 2880, while the sum is 32.

The square root of 100980815 is about 10048.9210863654. The cubic root of 100980815 is about 465.6714622045.

The spelling of 100980815 in words is "one hundred million, nine hundred eighty thousand, eight hundred fifteen".