90090270 has 24 divisors (see below), whose sum is σ = 234234936. Its totient is φ = 24024048.

The previous prime is 90090239. The next prime is 90090271. The reversal of 90090270 is 7209009.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90090271) 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, 500412 + ... + 500591.

It is an arithmetic number, because the mean of its divisors is an integer number (9759789).

Almost surely, 2^90090270 is an apocalyptic number.

90090270 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

90090270 is an abundant number, since it is smaller than the sum of its proper divisors (144144666).

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

90090270 is a wasteful number, since it uses less digits than its factorization.

90090270 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1001016 (or 1001013 counting only the distinct ones).

The product of its (nonzero) digits is 1134, while the sum is 27.

The square root of 90090270 is about 9491.5894348628. The cubic root of 90090270 is about 448.2902528897.

Adding to 90090270 its reverse (7209009), we get a palindrome (97299279).

The spelling of 90090270 in words is "ninety million, ninety thousand, two hundred seventy".