1340284 has 24 divisors (see below), whose sum is σ = 2596608. Its totient is φ = 600240.

The previous prime is 1340281. The next prime is 1340291. The reversal of 1340284 is 4820431.

It is a super-2 number, since 2×1340284² = 3592722401312, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1340281) 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, 3469 + ... + 3835.

It is an arithmetic number, because the mean of its divisors is an integer number (108192).

2^1340284 is an apocalyptic number.

It is an amenable number.

1340284 is a deficient number, since it is larger than the sum of its proper divisors (1256324).

1340284 is a wasteful number, since it uses less digits than its factorization.

1340284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 465 (or 463 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 1340284 is about 1157.7063530965. The cubic root of 1340284 is about 110.2551652155.

The spelling of 1340284 in words is "one million, three hundred forty thousand, two hundred eighty-four".