16997652 has 72 divisors (see below), whose sum is σ = 50459136. Its totient is φ = 4722624.

The previous prime is 16997639. The next prime is 16997677. The reversal of 16997652 is 25679961.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 16997598 and 16997607.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8413 + ... + 10235.

Almost surely, 2^16997652 is an apocalyptic number.

16997652 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16997652, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25229568).

16997652 is an abundant number, since it is smaller than the sum of its proper divisors (33461484).

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

16997652 is a wasteful number, since it uses less digits than its factorization.

16997652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1877 (or 1872 counting only the distinct ones).

The product of its digits is 204120, while the sum is 45.

The square root of 16997652 is about 4122.8208789614. The cubic root of 16997652 is about 257.1163205420.

The spelling of 16997652 in words is "sixteen million, nine hundred ninety-seven thousand, six hundred fifty-two".