91632738 has 16 divisors (see below), whose sum is σ = 183622176. Its totient is φ = 30484800.

The previous prime is 91632731. The next prime is 91632787. The reversal of 91632738 is 83723619.

It is a junction number, because it is equal to n+sod(n) for n = 91632696 and 91632705.

It is not an unprimeable number, because it can be changed into a prime (91632731) by changing a digit.

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, 11463 + ... + 17738.

It is an arithmetic number, because the mean of its divisors is an integer number (11476386).

Almost surely, 2^91632738 is an apocalyptic number.

91632738 is an abundant number, since it is smaller than the sum of its proper divisors (91989438).

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

91632738 is a wasteful number, since it uses less digits than its factorization.

91632738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29729.

The product of its digits is 54432, while the sum is 39.

The square root of 91632738 is about 9572.4990467485. The cubic root of 91632738 is about 450.8342352084.

The spelling of 91632738 in words is "ninety-one million, six hundred thirty-two thousand, seven hundred thirty-eight".