90433380 has 48 divisors (see below), whose sum is σ = 255737664. Its totient is φ = 23875200.

The previous prime is 90433379. The next prime is 90433381. The reversal of 90433380 is 8333409.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (90433379) and next prime (90433381).

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

It is not an unprimeable number, because it can be changed into a prime (90433381) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1402 + ... + 13521.

It is an arithmetic number, because the mean of its divisors is an integer number (5327868).

Almost surely, 2^90433380 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 90433380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (127868832).

90433380 is an abundant number, since it is smaller than the sum of its proper divisors (165304284).

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

90433380 is a wasteful number, since it uses less digits than its factorization.

90433380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15036 (or 15034 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 30.

The square root of 90433380 is about 9509.6466811338. The cubic root of 90433380 is about 448.8586384089.

Adding to 90433380 its reverse (8333409), we get a palindrome (98766789).

The spelling of 90433380 in words is "ninety million, four hundred thirty-three thousand, three hundred eighty".