16994490 has 32 divisors (see below), whose sum is σ = 40896576. Its totient is φ = 4519680.

The previous prime is 16994449. The next prime is 16994491. The reversal of 16994490 is 9449961.

It is not an unprimeable number, because it can be changed into a prime (16994491) 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, 18850 + ... + 19730.

It is an arithmetic number, because the mean of its divisors is an integer number (1278018).

Almost surely, 2^16994490 is an apocalyptic number.

16994490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16994490 is an abundant number, since it is smaller than the sum of its proper divisors (23902086).

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

16994490 is a wasteful number, since it uses less digits than its factorization.

16994490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1534.

The product of its (nonzero) digits is 69984, while the sum is 42.

The square root of 16994490 is about 4122.4373858192. The cubic root of 16994490 is about 257.1003761393.

The spelling of 16994490 in words is "sixteen million, nine hundred ninety-four thousand, four hundred ninety".