16777890 has 48 divisors (see below), whose sum is σ = 43845048. Its totient is φ = 4451328.

The previous prime is 16777853. The next prime is 16777903. The reversal of 16777890 is 9877761.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 9308601 + 7469289 = 3051^2 + 2733^2 .

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24594 + ... + 25266.

Almost surely, 2^16777890 is an apocalyptic number.

16777890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16777890 is an abundant number, since it is smaller than the sum of its proper divisors (27067158).

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

16777890 is a wasteful number, since it uses less digits than its factorization.

16777890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 963 (or 960 counting only the distinct ones).

The product of its (nonzero) digits is 148176, while the sum is 45.

The square root of 16777890 is about 4096.0822745643. The cubic root of 16777890 is about 256.0034280954.

The spelling of 16777890 in words is "sixteen million, seven hundred seventy-seven thousand, eight hundred ninety".