90230620 has 48 divisors (see below), whose sum is σ = 200309760. Its totient is φ = 34046784.

The previous prime is 90230593. The next prime is 90230653. The reversal of 90230620 is 2603209.

It is a junction number, because it is equal to n+sod(n) for n = 90230591 and 90230600.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 139137 + ... + 139783.

It is an arithmetic number, because the mean of its divisors is an integer number (4173120).

Almost surely, 2^90230620 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 90230620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (100154880).

90230620 is an abundant number, since it is smaller than the sum of its proper divisors (110079140).

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

90230620 is a wasteful number, since it uses less digits than its factorization.

90230620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1042 (or 1040 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 90230620 is about 9498.9799452362. The cubic root of 90230620 is about 448.5229265275.

Adding to 90230620 its reverse (2603209), we get a palindrome (92833829).

The spelling of 90230620 in words is "ninety million, two hundred thirty thousand, six hundred twenty".