15222993 has 8 divisors (see below), whose sum is σ = 20340000. Its totient is φ = 10127328.

The previous prime is 15222983. The next prime is 15223027. The reversal of 15222993 is 39922251.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 15222993 - 2⁶ = 15222929 is a prime.

It is not an unprimeable number, because it can be changed into a prime (15222913) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3588 + ... + 6581.

It is an arithmetic number, because the mean of its divisors is an integer number (2542500).

Almost surely, 2^15222993 is an apocalyptic number.

It is an amenable number.

15222993 is a deficient number, since it is larger than the sum of its proper divisors (5117007).

15222993 is a wasteful number, since it uses less digits than its factorization.

15222993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10671.

The product of its digits is 9720, while the sum is 33.

The square root of 15222993 is about 3901.6654136407. The cubic root of 15222993 is about 247.8373076630.

The spelling of 15222993 in words is "fifteen million, two hundred twenty-two thousand, nine hundred ninety-three".