90219768 has 32 divisors (see below), whose sum is σ = 226089600. Its totient is φ = 30001248.

The previous prime is 90219763. The next prime is 90219769. The reversal of 90219768 is 86791209.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90219761) 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, 6255 + ... + 14817.

It is an arithmetic number, because the mean of its divisors is an integer number (7065300).

Almost surely, 2^90219768 is an apocalyptic number.

It is an amenable number.

90219768 is an abundant number, since it is smaller than the sum of its proper divisors (135869832).

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

90219768 is a wasteful number, since it uses less digits than its factorization.

90219768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9011 (or 9007 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 42.

The square root of 90219768 is about 9498.4087088312. The cubic root of 90219768 is about 448.5049445832.

The spelling of 90219768 in words is "ninety million, two hundred nineteen thousand, seven hundred sixty-eight".