16626090 has 64 divisors (see below), whose sum is σ = 43545600. Its totient is φ = 4038144.

The previous prime is 16626089. The next prime is 16626107. The reversal of 16626090 is 9062661.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 34471 + ... + 34949.

It is an arithmetic number, because the mean of its divisors is an integer number (680400).

Almost surely, 2^16626090 is an apocalyptic number.

16626090 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 16626090, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21772800).

16626090 is an abundant number, since it is smaller than the sum of its proper divisors (26919510).

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

16626090 is a wasteful number, since it uses less digits than its factorization.

16626090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 591.

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 16626090 is about 4077.5102697602. The cubic root of 16626090 is about 255.2290137936.

The spelling of 16626090 in words is "sixteen million, six hundred twenty-six thousand, ninety".