16890534 has 24 divisors (see below), whose sum is σ = 37198512. Its totient is φ = 5537520.

The previous prime is 16890527. The next prime is 16890539. The reversal of 16890534 is 43509861.

16890534 = 132² + 133² + ... + 375².

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16890539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6594 + ... + 8789.

It is an arithmetic number, because the mean of its divisors is an integer number (1549938).

Almost surely, 2^16890534 is an apocalyptic number.

16890534 is an abundant number, since it is smaller than the sum of its proper divisors (20307978).

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

16890534 is a wasteful number, since it uses less digits than its factorization.

16890534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15452 (or 15449 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 16890534 is about 4109.8094846355. The cubic root of 16890534 is about 256.5750723567.

It can be divided in two parts, 16890 and 534, that added together give a square (17424 = 132²).

The spelling of 16890534 in words is "sixteen million, eight hundred ninety thousand, five hundred thirty-four".