16897140 has 192 divisors, whose sum is σ = 59270400. Its totient is φ = 3967488.

The previous prime is 16897129. The next prime is 16897141. The reversal of 16897140 is 4179861.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 16897095 and 16897104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16897141) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 203539 + ... + 203621.

It is an arithmetic number, because the mean of its divisors is an integer number (308700).

Almost surely, 2^16897140 is an apocalyptic number.

16897140 is a gapful number since it is divisible by the number (10) 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 16897140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29635200).

16897140 is an abundant number, since it is smaller than the sum of its proper divisors (42373260).

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

16897140 is a wasteful number, since it uses less digits than its factorization.

16897140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143 (or 135 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 36.

The square root of 16897140 is about 4110.6130929583. The cubic root of 16897140 is about 256.6085174017.

The spelling of 16897140 in words is "sixteen million, eight hundred ninety-seven thousand, one hundred forty".