366221000 has 32 divisors (see below), whose sum is σ = 856959480. Its totient is φ = 146488000.

The previous prime is 366220969. The next prime is 366221041. The reversal of 366221000 is 122663.

It can be written as a sum of positive squares in 4 ways, for example, as 239568484 + 126652516 = 15478^2 + 11254^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 182111 + ... + 184110.

Almost surely, 2^366221000 is an apocalyptic number.

It is an amenable number.

366221000 is an abundant number, since it is smaller than the sum of its proper divisors (490738480).

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

366221000 is a wasteful number, since it uses less digits than its factorization.

366221000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 366242 (or 366228 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 366221000 is about 19136.9015255866. The cubic root of 366221000 is about 715.4529543889.

Adding to 366221000 its reverse (122663), we get a palindrome (366343663).

The spelling of 366221000 in words is "three hundred sixty-six million, two hundred twenty-one thousand".