90219060 has 36 divisors (see below), whose sum is σ = 273665028. Its totient is φ = 24058368.

The previous prime is 90219047. The next prime is 90219067. The reversal of 90219060 is 6091209.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 33246756 + 56972304 = 5766^2 + 7548^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90219067) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 250429 + ... + 250788.

Almost surely, 2^90219060 is an apocalyptic number.

90219060 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

90219060 is an abundant number, since it is smaller than the sum of its proper divisors (183445968).

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

90219060 is a wasteful number, since it uses less digits than its factorization.

90219060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 501232 (or 501227 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 27.

The square root of 90219060 is about 9498.3714393574. The cubic root of 90219060 is about 448.5037713653.

It can be divided in two parts, 9021 and 9060, that added together give a palindrome (18081).

The spelling of 90219060 in words is "ninety million, two hundred nineteen thousand, sixty".