15222374 has 4 divisors (see below), whose sum is σ = 22833564. Its totient is φ = 7611186.

The previous prime is 15222373. The next prime is 15222377. The reversal of 15222374 is 47322251.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 47322251 = 149 ⋅317599.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15222371) 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 as a sum of consecutive naturals, namely, 3805592 + ... + 3805595.

It is an arithmetic number, because the mean of its divisors is an integer number (5708391).

Almost surely, 2^15222374 is an apocalyptic number.

15222374 is a deficient number, since it is larger than the sum of its proper divisors (7611190).

15222374 is an equidigital number, since it uses as much as digits as its factorization.

15222374 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7611189.

The product of its digits is 3360, while the sum is 26.

The square root of 15222374 is about 3901.5860877341. The cubic root of 15222374 is about 247.8339484162.

The spelling of 15222374 in words is "fifteen million, two hundred twenty-two thousand, three hundred seventy-four".