16825890 has 16 divisors (see below), whose sum is σ = 40382208. Its totient is φ = 4486896.

The previous prime is 16825889. The next prime is 16825927. The reversal of 16825890 is 9852861.

It is a super-2 number, since 2×16825890² = 566221148584200, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 280402 + ... + 280461.

It is an arithmetic number, because the mean of its divisors is an integer number (2523888).

Almost surely, 2^16825890 is an apocalyptic number.

16825890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16825890 is an abundant number, since it is smaller than the sum of its proper divisors (23556318).

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

16825890 is a wasteful number, since it uses less digits than its factorization.

16825890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 560873.

The product of its (nonzero) digits is 34560, while the sum is 39.

The square root of 16825890 is about 4101.9373471568. The cubic root of 16825890 is about 256.2473297362.

The spelling of 16825890 in words is "sixteen million, eight hundred twenty-five thousand, eight hundred ninety".