16779490 has 32 divisors (see below), whose sum is σ = 37175040. Its totient is φ = 5310144.

The previous prime is 16779479. The next prime is 16779491. The reversal of 16779490 is 9497761.

It is a happy number.

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (16779491) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8310 + ... + 10129.

It is an arithmetic number, because the mean of its divisors is an integer number (1161720).

Almost surely, 2^16779490 is an apocalyptic number.

16779490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16779490 is an abundant number, since it is smaller than the sum of its proper divisors (20395550).

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

16779490 is a wasteful number, since it uses less digits than its factorization.

16779490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18466.

The product of its (nonzero) digits is 95256, while the sum is 43.

The square root of 16779490 is about 4096.2775784851. The cubic root of 16779490 is about 256.0115656396.

The spelling of 16779490 in words is "sixteen million, seven hundred seventy-nine thousand, four hundred ninety".