90424250 has 64 divisors (see below), whose sum is σ = 195257088. Its totient is φ = 30715200.

The previous prime is 90424237. The next prime is 90424253. The reversal of 90424250 is 5242409.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (90424253) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 285092 + ... + 285408.

It is an arithmetic number, because the mean of its divisors is an integer number (3050892).

Almost surely, 2^90424250 is an apocalyptic number.

90424250 is an abundant number, since it is smaller than the sum of its proper divisors (104832838).

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

90424250 is a wasteful number, since it uses less digits than its factorization.

90424250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 504 (or 494 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 90424250 is about 9509.1666301522. The cubic root of 90424250 is about 448.8435325660.

Adding to 90424250 its reverse (5242409), we get a palindrome (95666659).

The spelling of 90424250 in words is "ninety million, four hundred twenty-four thousand, two hundred fifty".