1358864 has 40 divisors (see below), whose sum is σ = 2916480. Its totient is φ = 609408.

The previous prime is 1358857. The next prime is 1358881. The reversal of 1358864 is 4688531.

It is a super-2 number, since 2×1358864² = 3693022740992, which contains 22 as substring.

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, 9707 + ... + 9845.

It is an arithmetic number, because the mean of its divisors is an integer number (72912).

2^1358864 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 1358864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1458240).

1358864 is an abundant number, since it is smaller than the sum of its proper divisors (1557616).

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

1358864 is a wasteful number, since it uses less digits than its factorization.

With its predecessor (1358863) it forms an eRAP, since the sums of their prime factors are consecutive (206 and 207).

1358864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207 (or 201 counting only the distinct ones).

The product of its digits is 23040, while the sum is 35.

The square root of 1358864 is about 1165.7032212360. The cubic root of 1358864 is about 110.7623082489.

It can be divided in two parts, 1358 and 864, that added together give a palindrome (2222).

The spelling of 1358864 in words is "one million, three hundred fifty-eight thousand, eight hundred sixty-four".