90216700 has 54 divisors (see below), whose sum is σ = 224362376. Its totient is φ = 30845280.

The previous prime is 90216697. The next prime is 90216701. The reversal of 90216700 is 761209.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90216701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 251121 + ... + 251479.

Almost surely, 2^90216700 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 90216700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (112181188).

90216700 is an abundant number, since it is smaller than the sum of its proper divisors (134145676).

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

90216700 is a wasteful number, since it uses less digits than its factorization.

90216700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 739 (or 373 counting only the distinct ones).

The product of its (nonzero) digits is 756, while the sum is 25.

The square root of 90216700 is about 9498.2472067219. The cubic root of 90216700 is about 448.4998605948.

Adding to 90216700 its reverse (761209), we get a palindrome (90977909).

The spelling of 90216700 in words is "ninety million, two hundred sixteen thousand, seven hundred".