100391632 has 20 divisors (see below), whose sum is σ = 212191776. Its totient is φ = 45632480.

The previous prime is 100391587. The next prime is 100391633. The reversal of 100391632 is 236193001.

It is a junction number, because it is equal to n+sod(n) for n = 100391597 and 100391606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100391633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 285028 + ... + 285379.

Almost surely, 2^100391632 is an apocalyptic number.

It is an amenable number.

100391632 is an abundant number, since it is smaller than the sum of its proper divisors (111800144).

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

100391632 is a wasteful number, since it uses less digits than its factorization.

100391632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 570426 (or 570420 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 25.

The square root of 100391632 is about 10019.5624654972. The cubic root of 100391632 is about 464.7640256432.

The spelling of 100391632 in words is "one hundred million, three hundred ninety-one thousand, six hundred thirty-two".