90502638 has 8 divisors (see below), whose sum is σ = 181005288. Its totient is φ = 30167544.

The previous prime is 90502627. The next prime is 90502651. The reversal of 90502638 is 83620509.

It is a happy number.

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

90502638 is an admirable number.

It is a super-3 number, since 3×90502638³ (a number of 25 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 90502599 and 90502608.

It is a congruent number.

It is an unprimeable number.

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, 7541881 + ... + 7541892.

It is an arithmetic number, because the mean of its divisors is an integer number (22625661).

Almost surely, 2^90502638 is an apocalyptic number.

90502638 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

90502638 is a wasteful number, since it uses less digits than its factorization.

90502638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15083778.

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 90502638 is about 9513.2874444116. The cubic root of 90502638 is about 448.9731946306.

The spelling of 90502638 in words is "ninety million, five hundred two thousand, six hundred thirty-eight".