16222340 has 24 divisors (see below), whose sum is σ = 34627992. Its totient is φ = 6382080.

The previous prime is 16222321. The next prime is 16222373. The reversal of 16222340 is 4322261.

It can be written as a sum of positive squares in 4 ways, for example, as 1827904 + 14394436 = 1352^2 + 3794^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 5429 + ... + 7868.

It is an arithmetic number, because the mean of its divisors is an integer number (1442833).

Almost surely, 2^16222340 is an apocalyptic number.

16222340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16222340 is an abundant number, since it is smaller than the sum of its proper divisors (18405652).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16222340 is a wasteful number, since it uses less digits than its factorization.

16222340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13367 (or 13365 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 16222340 is about 4027.6966122090. The cubic root of 16222340 is about 253.1460565728.

The spelling of 16222340 in words is "sixteen million, two hundred twenty-two thousand, three hundred forty".