101638734 has 16 divisors (see below), whose sum is σ = 205374288. Its totient is φ = 33530112.

The previous prime is 101638681. The next prime is 101638751. The reversal of 101638734 is 437836101.

It is a junction number, because it is equal to n+sod(n) for n = 101638695 and 101638704.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86737 + ... + 87900.

It is an arithmetic number, because the mean of its divisors is an integer number (12835893).

Almost surely, 2^101638734 is an apocalyptic number.

101638734 is an abundant number, since it is smaller than the sum of its proper divisors (103735554).

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

101638734 is a wasteful number, since it uses less digits than its factorization.

101638734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174739.

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 101638734 is about 10081.6037414689. The cubic root of 101638734 is about 466.6806015113.

The spelling of 101638734 in words is "one hundred one million, six hundred thirty-eight thousand, seven hundred thirty-four".