15228666 has 12 divisors (see below), whose sum is σ = 32995482. Its totient is φ = 5076216.

The previous prime is 15228659. The next prime is 15228673. The reversal of 15228666 is 66682251.

It is an interprime number because it is at equal distance from previous prime (15228659) and next prime (15228673).

It can be written as a sum of positive squares in only one way, i.e., 13111641 + 2117025 = 3621^2 + 1455^2 .

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 15228666.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 423001 + ... + 423036.

Almost surely, 2^15228666 is an apocalyptic number.

15228666 is an abundant number, since it is smaller than the sum of its proper divisors (17766816).

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

15228666 is a wasteful number, since it uses less digits than its factorization.

15228666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 846045 (or 846042 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The square root of 15228666 is about 3902.3923431659. The cubic root of 15228666 is about 247.8680901868.

The spelling of 15228666 in words is "fifteen million, two hundred twenty-eight thousand, six hundred sixty-six".