90170010 has 256 divisors, whose sum is σ = 302284800. Its totient is φ = 18895680.

The previous prime is 90170009. The next prime is 90170021. The reversal of 90170010 is 1007109.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 2908695 + ... + 2908725.

It is an arithmetic number, because the mean of its divisors is an integer number (1180800).

Almost surely, 2^90170010 is an apocalyptic number.

90170010 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 90170010, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (151142400).

90170010 is an abundant number, since it is smaller than the sum of its proper divisors (212114790).

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

90170010 is a wasteful number, since it uses less digits than its factorization.

90170010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85 (or 67 counting only the distinct ones).

The product of its (nonzero) digits is 63, while the sum is 18.

The square root of 90170010 is about 9495.7890667390. The cubic root of 90170010 is about 448.4224762820.

Adding to 90170010 its reverse (1007109), we get a palindrome (91177119).

The spelling of 90170010 in words is "ninety million, one hundred seventy thousand, ten".