90230730 has 32 divisors (see below), whose sum is σ = 229293504. Its totient is φ = 22646016.

The previous prime is 90230671. The next prime is 90230731. The reversal of 90230730 is 3703209.

It is a self number, because there is not a number n which added to its sum of digits gives 90230730.

It is not an unprimeable number, because it can be changed into a prime (90230731) 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, 87952 + ... + 88971.

It is an arithmetic number, because the mean of its divisors is an integer number (7165422).

Almost surely, 2^90230730 is an apocalyptic number.

90230730 is an abundant number, since it is smaller than the sum of its proper divisors (139062774).

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

90230730 is a wasteful number, since it uses less digits than its factorization.

90230730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176950.

The product of its (nonzero) digits is 1134, while the sum is 24.

The square root of 90230730 is about 9498.9857353299. The cubic root of 90230730 is about 448.5231087919.

Adding to 90230730 its reverse (3703209), we get a palindrome (93933939).

The spelling of 90230730 in words is "ninety million, two hundred thirty thousand, seven hundred thirty".