90233660 has 48 divisors (see below), whose sum is σ = 217607040. Its totient is φ = 31083840.

The previous prime is 90233659. The next prime is 90233711. The reversal of 90233660 is 6633209.

It is a super-2 number, since 2×90233660² = 16284226793991200, which contains 22 as substring.

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, 6614 + ... + 14973.

It is an arithmetic number, because the mean of its divisors is an integer number (4533480).

Almost surely, 2^90233660 is an apocalyptic number.

It is an amenable number.

90233660 is an abundant number, since it is smaller than the sum of its proper divisors (127373380).

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

90233660 is a wasteful number, since it uses less digits than its factorization.

90233660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21626 (or 21624 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 29.

The square root of 90233660 is about 9499.1399610702. The cubic root of 90233660 is about 448.5279635995.

Adding to 90233660 its reverse (6633209), we get a palindrome (96866869).

The spelling of 90233660 in words is "ninety million, two hundred thirty-three thousand, six hundred sixty".