90242506 has 16 divisors (see below), whose sum is σ = 138218400. Its totient is φ = 44176048.

The previous prime is 90242483. The next prime is 90242507. The reversal of 90242506 is 60524209.

It is not an unprimeable number, because it can be changed into a prime (90242507) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30321 + ... + 33163.

It is an arithmetic number, because the mean of its divisors is an integer number (8638650).

Almost surely, 2^90242506 is an apocalyptic number.

90242506 is a deficient number, since it is larger than the sum of its proper divisors (47975894).

90242506 is a wasteful number, since it uses less digits than its factorization.

90242506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3173.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 90242506 is about 9499.6055707592. The cubic root of 90242506 is about 448.5426201726.

The spelling of 90242506 in words is "ninety million, two hundred forty-two thousand, five hundred six".