90343470 has 64 divisors (see below), whose sum is σ = 251536896. Its totient is φ = 20338560.

The previous prime is 90343469. The next prime is 90343481. The reversal of 90343470 is 7434309.

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

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10860 + ... + 17280.

It is an arithmetic number, because the mean of its divisors is an integer number (3930264).

Almost surely, 2^90343470 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 90343470, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (125768448).

90343470 is an abundant number, since it is smaller than the sum of its proper divisors (161193426).

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

90343470 is a wasteful number, since it uses less digits than its factorization.

90343470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6505.

The product of its (nonzero) digits is 9072, while the sum is 30.

The square root of 90343470 is about 9504.9182005949. The cubic root of 90343470 is about 448.7098354557.

Adding to 90343470 its reverse (7434309), we get a palindrome (97777779).

The spelling of 90343470 in words is "ninety million, three hundred forty-three thousand, four hundred seventy".