1358728 has 32 divisors (see below), whose sum is σ = 3067200. Its totient is φ = 551232.

The previous prime is 1358717. The next prime is 1358729. The reversal of 1358728 is 8278531.

It is a super-2 number, since 2×1358728² = 3692283555968, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1358693 and 1358702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1358729) 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, 426 + ... + 1702.

It is an arithmetic number, because the mean of its divisors is an integer number (95850).

2^1358728 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 1358728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1533600).

1358728 is an abundant number, since it is smaller than the sum of its proper divisors (1708472).

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

1358728 is a wasteful number, since it uses less digits than its factorization.

1358728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1309 (or 1305 counting only the distinct ones).

The product of its digits is 13440, while the sum is 34.

The square root of 1358728 is about 1165.6448858894. The cubic root of 1358728 is about 110.7586129622.

The spelling of 1358728 in words is "one million, three hundred fifty-eight thousand, seven hundred twenty-eight".