1293864 has 96 divisors (see below), whose sum is σ = 3952800. Its totient is φ = 349440.

The previous prime is 1293857. The next prime is 1293869. The reversal of 1293864 is 4683921.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (1293869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 44602 + ... + 44630.

It is an arithmetic number, because the mean of its divisors is an integer number (41175).

2^1293864 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1293864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1976400).

1293864 is an abundant number, since it is smaller than the sum of its proper divisors (2658936).

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

1293864 is a wasteful number, since it uses less digits than its factorization.

1293864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75 (or 58 counting only the distinct ones).

The product of its digits is 10368, while the sum is 33.

The square root of 1293864 is about 1137.4814284198. The cubic root of 1293864 is about 108.9673049542.

It can be divided in two parts, 129 and 3864, that added together give a palindrome (3993).

The spelling of 1293864 in words is "one million, two hundred ninety-three thousand, eight hundred sixty-four".