90733080 has 128 divisors (see below), whose sum is σ = 292377600. Its totient is φ = 22444032.

The previous prime is 90733073. The next prime is 90733099. The reversal of 90733080 is 8033709.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 160879 + ... + 161441.

It is an arithmetic number, because the mean of its divisors is an integer number (2284200).

Almost surely, 2^90733080 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 90733080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (146188800).

90733080 is an abundant number, since it is smaller than the sum of its proper divisors (201644520).

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

90733080 is a wasteful number, since it uses less digits than its factorization.

90733080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 673 (or 669 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 30.

The square root of 90733080 is about 9525.3913305439. The cubic root of 90733080 is about 449.3539370919.

Adding to 90733080 its reverse (8033709), we get a palindrome (98766789).

The spelling of 90733080 in words is "ninety million, seven hundred thirty-three thousand, eighty".