100778216 has 32 divisors (see below), whose sum is σ = 235586880. Its totient is φ = 39264000.

The previous prime is 100778213. The next prime is 100778221. The reversal of 100778216 is 612877001.

It is a Smith number, since the sum of its digits (32) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (100778213) 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, 81185 + ... + 82416.

It is an arithmetic number, because the mean of its divisors is an integer number (7362090).

Almost surely, 2^100778216 is an apocalyptic number.

It is an amenable number.

100778216 is an abundant number, since it is smaller than the sum of its proper divisors (134808664).

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

100778216 is a wasteful number, since it uses less digits than its factorization.

100778216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163625 (or 163621 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 32.

The square root of 100778216 is about 10038.8353906218. The cubic root of 100778216 is about 465.3598263164.

The spelling of 100778216 in words is "one hundred million, seven hundred seventy-eight thousand, two hundred sixteen".