1684272 has 20 divisors (see below), whose sum is σ = 4351160. Its totient is φ = 561408.

The previous prime is 1684259. The next prime is 1684283. The reversal of 1684272 is 2724861.

It is a super-3 number, since 3×1684272³ = 14333687808849874944, which contains 333 as substring.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a d-powerful number, because it can be written as 1 + 6⁸ + 8 + 4⁶ + 2⁵ + 7 + 2⁹ .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17497 + ... + 17592.

It is an arithmetic number, because the mean of its divisors is an integer number (217558).

2^1684272 is an apocalyptic number.

1684272 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1684272 is an abundant number, since it is smaller than the sum of its proper divisors (2666888).

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

1684272 is a wasteful number, since it uses less digits than its factorization.

1684272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35100 (or 35094 counting only the distinct ones).

The product of its digits is 5376, while the sum is 30.

The square root of 1684272 is about 1297.7950531575. The cubic root of 1684272 is about 118.9791173958.

The spelling of 1684272 in words is "one million, six hundred eighty-four thousand, two hundred seventy-two".