16512990 has 48 divisors (see below), whose sum is σ = 42927408. Its totient is φ = 4063488.

The previous prime is 16512973. The next prime is 16512997. The reversal of 16512990 is 9921561.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16512997) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3442 + ... + 6698.

It is an arithmetic number, because the mean of its divisors is an integer number (894321).

Almost surely, 2^16512990 is an apocalyptic number.

16512990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 16512990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21463704).

16512990 is an abundant number, since it is smaller than the sum of its proper divisors (26414418).

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

16512990 is a wasteful number, since it uses less digits than its factorization.

16512990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3293 (or 3280 counting only the distinct ones).

The product of its (nonzero) digits is 4860, while the sum is 33.

The square root of 16512990 is about 4063.6178462055. The cubic root of 16512990 is about 254.6489594912.

The spelling of 16512990 in words is "sixteen million, five hundred twelve thousand, nine hundred ninety".