16220898 has 20 divisors (see below), whose sum is σ = 36347190. Its totient is φ = 5406912.

The previous prime is 16220891. The next prime is 16220899. The reversal of 16220898 is 89802261.

It can be written as a sum of positive squares in only one way, i.e., 15186609 + 1034289 = 3897^2 + 1017^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16220891) 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 9 ways as a sum of consecutive naturals, for example, 49903 + ... + 50226.

Almost surely, 2^16220898 is an apocalyptic number.

16220898 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

16220898 is an abundant number, since it is smaller than the sum of its proper divisors (20126292).

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

16220898 is a wasteful number, since it uses less digits than its factorization.

16220898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100143 (or 100134 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The square root of 16220898 is about 4027.5175977269. The cubic root of 16220898 is about 253.1385556526.

The spelling of 16220898 in words is "sixteen million, two hundred twenty thousand, eight hundred ninety-eight".