90180680 has 16 divisors (see below), whose sum is σ = 202906620. Its totient is φ = 36072256.

The previous prime is 90180679. The next prime is 90180683. The reversal of 90180680 is 8608109.

It can be written as a sum of positive squares in 2 ways, for example, as 88774084 + 1406596 = 9422^2 + 1186^2 .

It is not an unprimeable number, because it can be changed into a prime (90180683) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1127219 + ... + 1127298.

Almost surely, 2^90180680 is an apocalyptic number.

It is an amenable number.

90180680 is an abundant number, since it is smaller than the sum of its proper divisors (112725940).

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

90180680 is a wasteful number, since it uses less digits than its factorization.

90180680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2254528 (or 2254524 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 32.

The square root of 90180680 is about 9496.3508781005. The cubic root of 90180680 is about 448.4401631645.

Adding to 90180680 its reverse (8608109), we get a palindrome (98788789).

The spelling of 90180680 in words is "ninety million, one hundred eighty thousand, six hundred eighty".