16220490 has 128 divisors (see below), whose sum is σ = 48384000. Its totient is φ = 3421440.

The previous prime is 16220489. The next prime is 16220513. The reversal of 16220490 is 9402261.

16220490 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 16220490.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 81411 + ... + 81609.

It is an arithmetic number, because the mean of its divisors is an integer number (378000).

Almost surely, 2^16220490 is an apocalyptic number.

16220490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 16220490, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24192000).

16220490 is an abundant number, since it is smaller than the sum of its proper divisors (32163510).

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

16220490 is a wasteful number, since it uses less digits than its factorization.

16220490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 16220490 is about 4027.4669458606. The cubic root of 16220490 is about 253.1364332589.

The spelling of 16220490 in words is "sixteen million, two hundred twenty thousand, four hundred ninety".