90434190 has 96 divisors (see below), whose sum is σ = 272724480. Its totient is φ = 18786240.

The previous prime is 90434189. The next prime is 90434213. The reversal of 90434190 is 9143409.

It is a super-2 number, since 2×90434190² = 16356685441912200, which contains 22 as substring.

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 47 ways as a sum of consecutive naturals, for example, 23631 + ... + 27189.

It is an arithmetic number, because the mean of its divisors is an integer number (2840880).

Almost surely, 2^90434190 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 90434190, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (136362240).

90434190 is an abundant number, since it is smaller than the sum of its proper divisors (182290290).

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

90434190 is a wasteful number, since it uses less digits than its factorization.

90434190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3598 (or 3587 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 90434190 is about 9509.6892693715. The cubic root of 90434190 is about 448.8599785276.

Adding to 90434190 its reverse (9143409), we get a palindrome (99577599).

The spelling of 90434190 in words is "ninety million, four hundred thirty-four thousand, one hundred ninety".