90272330 has 32 divisors (see below), whose sum is σ = 164947968. Its totient is φ = 35568000.

The previous prime is 90272323. The next prime is 90272333. The reversal of 90272330 is 3327209.

It is a self number, because there is not a number n which added to its sum of digits gives 90272330.

It is not an unprimeable number, because it can be changed into a prime (90272333) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 288254 + ... + 288566.

It is an arithmetic number, because the mean of its divisors is an integer number (5154624).

Almost surely, 2^90272330 is an apocalyptic number.

90272330 is a deficient number, since it is larger than the sum of its proper divisors (74675638).

90272330 is a wasteful number, since it uses less digits than its factorization.

90272330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 662.

The product of its (nonzero) digits is 2268, while the sum is 26.

The square root of 90272330 is about 9501.1751904699. The cubic root of 90272330 is about 448.5920272731.

Adding to 90272330 its reverse (3327209), we get a palindrome (93599539).

The spelling of 90272330 in words is "ninety million, two hundred seventy-two thousand, three hundred thirty".