16990016 has 28 divisors (see below), whose sum is σ = 34198560. Its totient is φ = 8373120.

The previous prime is 16990007. The next prime is 16990019. The reversal of 16990016 is 61009961.

16990016 = T₆₅₆ + T₆₅₇ + ... + T₇₂₆.

It is a happy number.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16990019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2675 + ... + 6413.

Almost surely, 2^16990016 is an apocalyptic number.

16990016 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16990016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17099280).

16990016 is an abundant number, since it is smaller than the sum of its proper divisors (17208544).

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

16990016 is an equidigital number, since it uses as much as digits as its factorization.

16990016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3822 (or 3812 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 32.

The square root of 16990016 is about 4121.8947099605. The cubic root of 16990016 is about 257.0778125900.

Adding to 16990016 its reverse (61009961), we get a palindrome (77999977).

The spelling of 16990016 in words is "sixteen million, nine hundred ninety thousand, sixteen".