16690050 has 120 divisors (see below), whose sum is σ = 50098356. Its totient is φ = 4095360.

The previous prime is 16690049. The next prime is 16690057. The reversal of 16690050 is 5009661.

It can be written as a sum of positive squares in 6 ways, for example, as 505521 + 16184529 = 711^2 + 4023^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 16689996 and 16690023.

It is not an unprimeable number, because it can be changed into a prime (16690057) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 52492 + ... + 52808.

Almost surely, 2^16690050 is an apocalyptic number.

16690050 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 16690050, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25049178).

16690050 is an abundant number, since it is smaller than the sum of its proper divisors (33408306).

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

16690050 is a wasteful number, since it uses less digits than its factorization.

16690050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 354 (or 340 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 27.

The square root of 16690050 is about 4085.3457626008. The cubic root of 16690050 is about 255.5558807669. Note that the first 3 decimals are identical.

The spelling of 16690050 in words is "sixteen million, six hundred ninety thousand, fifty".