90446220 has 120 divisors (see below), whose sum is σ = 293048448. Its totient is φ = 23328000.

The previous prime is 90446219. The next prime is 90446227. The reversal of 90446220 is 2264409.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (90446227) by changing a digit.

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 39 ways as a sum of consecutive naturals, for example, 49320 + ... + 51120.

Almost surely, 2^90446220 is an apocalyptic number.

90446220 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 90446220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (146524224).

90446220 is an abundant number, since it is smaller than the sum of its proper divisors (202602228).

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

90446220 is a wasteful number, since it uses less digits than its factorization.

90446220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1853 (or 1842 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 90446220 is about 9510.3217611183. The cubic root of 90446220 is about 448.8798808313.

The spelling of 90446220 in words is "ninety million, four hundred forty-six thousand, two hundred twenty".