90634138 has 8 divisors (see below), whose sum is σ = 155372832. Its totient is φ = 38843196.

The previous prime is 90634097. The next prime is 90634139. The reversal of 90634138 is 83143609.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (90634139) 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, 3236920 + ... + 3236947.

It is an arithmetic number, because the mean of its divisors is an integer number (19421604).

Almost surely, 2^90634138 is an apocalyptic number.

90634138 is a deficient number, since it is larger than the sum of its proper divisors (64738694).

90634138 is a wasteful number, since it uses less digits than its factorization.

90634138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6473876.

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 90634138 is about 9520.1963215051. The cubic root of 90634138 is about 449.1905415297.

The spelling of 90634138 in words is "ninety million, six hundred thirty-four thousand, one hundred thirty-eight".