100815444 has 36 divisors (see below), whose sum is σ = 268253440. Its totient is φ = 31836240.

The previous prime is 100815443. The next prime is 100815461. The reversal of 100815444 is 444518001.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100815443) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 73012 + ... + 74379.

Almost surely, 2^100815444 is an apocalyptic number.

It is an amenable number.

100815444 is an abundant number, since it is smaller than the sum of its proper divisors (167437996).

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

100815444 is a wasteful number, since it uses less digits than its factorization.

100815444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147420 (or 147415 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 27.

The square root of 100815444 is about 10040.6894185609. The cubic root of 100815444 is about 465.4171213798.

The spelling of 100815444 in words is "one hundred million, eight hundred fifteen thousand, four hundred forty-four".