100691048 has 8 divisors (see below), whose sum is σ = 188795730. Its totient is φ = 50345520.

The previous prime is 100691047. The next prime is 100691057. The reversal of 100691048 is 840196001.

It can be written as a sum of positive squares in only one way, i.e., 87572164 + 13118884 = 9358^2 + 3622^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 100691048.

It is not an unprimeable number, because it can be changed into a prime (100691047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6293183 + ... + 6293198.

Almost surely, 2^100691048 is an apocalyptic number.

It is an amenable number.

100691048 is a deficient number, since it is larger than the sum of its proper divisors (88104682).

100691048 is a wasteful number, since it uses less digits than its factorization.

100691048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12586387 (or 12586383 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 29.

The square root of 100691048 is about 10034.4929119513. The cubic root of 100691048 is about 465.2256168018.

The spelling of 100691048 in words is "one hundred million, six hundred ninety-one thousand, forty-eight".