16222390 has 16 divisors (see below), whose sum is σ = 30737520. Its totient is φ = 6147360.

The previous prime is 16222387. The next prime is 16222417. The reversal of 16222390 is 9322261.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42501 + ... + 42880.

It is an arithmetic number, because the mean of its divisors is an integer number (1921095).

Almost surely, 2^16222390 is an apocalyptic number.

16222390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16222390 is a deficient number, since it is larger than the sum of its proper divisors (14515130).

16222390 is a wasteful number, since it uses less digits than its factorization.

16222390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85407.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 16222390 is about 4027.7028192259. The cubic root of 16222390 is about 253.1463166522.

The spelling of 16222390 in words is "sixteen million, two hundred twenty-two thousand, three hundred ninety".