90471580 has 12 divisors (see below), whose sum is σ = 189990360. Its totient is φ = 36188624.

The previous prime is 90471533. The next prime is 90471593. The reversal of 90471580 is 8517409.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2261770 + ... + 2261809.

It is an arithmetic number, because the mean of its divisors is an integer number (15832530).

Almost surely, 2^90471580 is an apocalyptic number.

It is an amenable number.

90471580 is an abundant number, since it is smaller than the sum of its proper divisors (99518780).

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

90471580 is a wasteful number, since it uses less digits than its factorization.

90471580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4523588 (or 4523586 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 34.

The square root of 90471580 is about 9511.6549558949. The cubic root of 90471580 is about 448.9218303640.

Adding to 90471580 its reverse (8517409), we get a palindrome (98988989).

The spelling of 90471580 in words is "ninety million, four hundred seventy-one thousand, five hundred eighty".