90210436 has 6 divisors (see below), whose sum is σ = 157868270. Its totient is φ = 45105216.

The previous prime is 90210433. The next prime is 90210467. The reversal of 90210436 is 63401209.

It can be written as a sum of positive squares in only one way, i.e., 85673536 + 4536900 = 9256^2 + 2130^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 90210436.

It is not an unprimeable number, because it can be changed into a prime (90210433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11276301 + ... + 11276308.

Almost surely, 2^90210436 is an apocalyptic number.

It is an amenable number.

90210436 is a deficient number, since it is larger than the sum of its proper divisors (67657834).

90210436 is a wasteful number, since it uses less digits than its factorization.

90210436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22552613 (or 22552611 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 90210436 is about 9497.9174559479. The cubic root of 90210436 is about 448.4894801510.

The spelling of 90210436 in words is "ninety million, two hundred ten thousand, four hundred thirty-six".