15220233 has 18 divisors (see below), whose sum is σ = 25574874. Its totient is φ = 8697024.

The previous prime is 15220193. The next prime is 15220241. The reversal of 15220233 is 33202251.

It can be written as a sum of positive squares in only one way, i.e., 14768649 + 451584 = 3843^2 + 672^2 .

It is not a de Polignac number, because 15220233 - 2¹⁷ = 15089161 is a prime.

It is not an unprimeable number, because it can be changed into a prime (15220243) 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 17 ways as a sum of consecutive naturals, for example, 16816 + ... + 17697.

Almost surely, 2^15220233 is an apocalyptic number.

It is an amenable number.

15220233 is a deficient number, since it is larger than the sum of its proper divisors (10354641).

15220233 is a wasteful number, since it uses less digits than its factorization.

15220233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34533 (or 34523 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 15220233 is about 3901.3117024919. The cubic root of 15220233 is about 247.8223287358.

Adding to 15220233 its reverse (33202251), we get a palindrome (48422484).

The spelling of 15220233 in words is "fifteen million, two hundred twenty thousand, two hundred thirty-three".