16971740 has 24 divisors (see below), whose sum is σ = 35740320. Its totient is φ = 6769728.

The previous prime is 16971739. The next prime is 16971743. The reversal of 16971740 is 4717961.

It is a self number, because there is not a number n which added to its sum of digits gives 16971740.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16971743) 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, 7814 + ... + 9746.

It is an arithmetic number, because the mean of its divisors is an integer number (1489180).

Almost surely, 2^16971740 is an apocalyptic number.

16971740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16971740 is an abundant number, since it is smaller than the sum of its proper divisors (18768580).

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

16971740 is a wasteful number, since it uses less digits than its factorization.

16971740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2381 (or 2379 counting only the distinct ones).

The product of its (nonzero) digits is 10584, while the sum is 35.

The square root of 16971740 is about 4119.6771718182. The cubic root of 16971740 is about 256.9856007921.

The spelling of 16971740 in words is "sixteen million, nine hundred seventy-one thousand, seven hundred forty".