15222770 has 16 divisors (see below), whose sum is σ = 27451008. Its totient is φ = 6078000.

The previous prime is 15222761. The next prime is 15222773. The reversal of 15222770 is 7722251.

It is not an unprimeable number, because it can be changed into a prime (15222773) by changing a digit.

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, 6497 + ... + 8523.

It is an arithmetic number, because the mean of its divisors is an integer number (1715688).

Almost surely, 2^15222770 is an apocalyptic number.

15222770 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

15222770 is a deficient number, since it is larger than the sum of its proper divisors (12228238).

15222770 is a wasteful number, since it uses less digits than its factorization.

15222770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2785.

The product of its (nonzero) digits is 1960, while the sum is 26.

The square root of 15222770 is about 3901.6368359959. The cubic root of 15222770 is about 247.8360974764.

It can be divided in two parts, 152 and 22770, that added together give a palindrome (22922).

The spelling of 15222770 in words is "fifteen million, two hundred twenty-two thousand, seven hundred seventy".