16969638 has 32 divisors (see below), whose sum is σ = 41071104. Its totient is φ = 4563072.

The previous prime is 16969637. The next prime is 16969661. The reversal of 16969638 is 83696961.

It is a super-2 number, since 2×16969638² = 575937227702088, which contains 22 as substring.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16969633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11170 + ... + 12597.

It is an arithmetic number, because the mean of its divisors is an integer number (1283472).

Almost surely, 2^16969638 is an apocalyptic number.

16969638 is an abundant number, since it is smaller than the sum of its proper divisors (24101466).

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

16969638 is a wasteful number, since it uses less digits than its factorization.

16969638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23796.

The product of its digits is 419904, while the sum is 48.

The square root of 16969638 is about 4119.4220468410. The cubic root of 16969638 is about 256.9749908794.

The spelling of 16969638 in words is "sixteen million, nine hundred sixty-nine thousand, six hundred thirty-eight".