16749690 has 32 divisors (see below), whose sum is σ = 40340160. Its totient is φ = 4450944.

The previous prime is 16749683. The next prime is 16749701. The reversal of 16749690 is 9694761.

It is a super-2 number, since 2×16749690² = 561104230192200, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

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, 9606 + ... + 11214.

It is an arithmetic number, because the mean of its divisors is an integer number (1260630).

Almost surely, 2^16749690 is an apocalyptic number.

16749690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16749690 is an abundant number, since it is smaller than the sum of its proper divisors (23590470).

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

16749690 is a wasteful number, since it uses less digits than its factorization.

16749690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1966.

The product of its (nonzero) digits is 81648, while the sum is 42.

The square root of 16749690 is about 4092.6385132332. The cubic root of 16749690 is about 255.8599188868.

The spelling of 16749690 in words is "sixteen million, seven hundred forty-nine thousand, six hundred ninety".