100780296 has 128 divisors (see below), whose sum is σ = 277482240. Its totient is φ = 30412800.

The previous prime is 100780291. The next prime is 100780321. The reversal of 100780296 is 692087001.

It is not an unprimeable number, because it can be changed into a prime (100780291) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1380516 + ... + 1380588.

It is an arithmetic number, because the mean of its divisors is an integer number (2167830).

Almost surely, 2^100780296 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 100780296, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (138741120).

100780296 is an abundant number, since it is smaller than the sum of its proper divisors (176701944).

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

100780296 is a wasteful number, since it uses less digits than its factorization.

100780296 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207 (or 203 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 33.

The square root of 100780296 is about 10038.9389877616. The cubic root of 100780296 is about 465.3630278740.

The spelling of 100780296 in words is "one hundred million, seven hundred eighty thousand, two hundred ninety-six".