16690090 has 32 divisors (see below), whose sum is σ = 32845824. Its totient is φ = 6078720.

The previous prime is 16690057. The next prime is 16690103. The reversal of 16690090 is 9009661.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3687 + ... + 6853.

It is an arithmetic number, because the mean of its divisors is an integer number (1026432).

Almost surely, 2^16690090 is an apocalyptic number.

16690090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16690090 is a deficient number, since it is larger than the sum of its proper divisors (16155734).

16690090 is a wasteful number, since it uses less digits than its factorization.

16690090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3222.

The product of its (nonzero) digits is 2916, while the sum is 31.

The square root of 16690090 is about 4085.3506581443. The cubic root of 16690090 is about 255.5560849250.

The spelling of 16690090 in words is "sixteen million, six hundred ninety thousand, ninety".