16897620 has 24 divisors (see below), whose sum is σ = 47313504. Its totient is φ = 4506016.

The previous prime is 16897591. The next prime is 16897627. The reversal of 16897620 is 2679861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16897627) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 140754 + ... + 140873.

It is an arithmetic number, because the mean of its divisors is an integer number (1971396).

Almost surely, 2^16897620 is an apocalyptic number.

16897620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16897620 is an abundant number, since it is smaller than the sum of its proper divisors (30415884).

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

16897620 is a wasteful number, since it uses less digits than its factorization.

16897620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281639 (or 281637 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 39.

The square root of 16897620 is about 4110.6714779948. The cubic root of 16897620 is about 256.6109472197.

The spelling of 16897620 in words is "sixteen million, eight hundred ninety-seven thousand, six hundred twenty".