8401340 has 24 divisors (see below), whose sum is σ = 18054960. Its totient is φ = 3282048.

The previous prime is 8401339. The next prime is 8401357. The reversal of 8401340 is 431048.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4025 + ... + 5744.

It is an arithmetic number, because the mean of its divisors is an integer number (752290).

Almost surely, 2^8401340 is an apocalyptic number.

It is an amenable number.

8401340 is an abundant number, since it is smaller than the sum of its proper divisors (9653620).

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

8401340 is a wasteful number, since it uses less digits than its factorization.

8401340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9821 (or 9819 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 8401340 is about 2898.5065119816. The cubic root of 8401340 is about 203.2900800828.

Adding to 8401340 its reverse (431048), we get a palindrome (8832388).

The spelling of 8401340 in words is "eight million, four hundred one thousand, three hundred forty".