90271530 has 128 divisors (see below), whose sum is σ = 259407360. Its totient is φ = 22256640.

The previous prime is 90271529. The next prime is 90271541. The reversal of 90271530 is 3517209.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 90271494 and 90271503.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 325752 + ... + 326028.

It is an arithmetic number, because the mean of its divisors is an integer number (2026620).

Almost surely, 2^90271530 is an apocalyptic number.

90271530 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 90271530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (129703680).

90271530 is an abundant number, since it is smaller than the sum of its proper divisors (169135830).

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

90271530 is a wasteful number, since it uses less digits than its factorization.

90271530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381 (or 375 counting only the distinct ones).

The product of its (nonzero) digits is 1890, while the sum is 27.

The square root of 90271530 is about 9501.1330903214. The cubic root of 90271530 is about 448.5907021174.

Adding to 90271530 its reverse (3517209), we get a palindrome (93788739).

The spelling of 90271530 in words is "ninety million, two hundred seventy-one thousand, five hundred thirty".