1356870 has 32 divisors (see below), whose sum is σ = 3363840. Its totient is φ = 349920.

The previous prime is 1356869. The next prime is 1356871. The reversal of 1356870 is 786531.

It is an interprime number because it is at equal distance from previous prime (1356869) and next prime (1356871).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1356871) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 201 + ... + 1659.

It is an arithmetic number, because the mean of its divisors is an integer number (105120).

2^1356870 is an apocalyptic number.

1356870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1356870, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1681920).

1356870 is an abundant number, since it is smaller than the sum of its proper divisors (2006970).

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

1356870 is a wasteful number, since it uses less digits than its factorization.

1356870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1500.

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 1356870 is about 1164.8476295207. The cubic root of 1356870 is about 110.7081041095.

The spelling of 1356870 in words is "one million, three hundred fifty-six thousand, eight hundred seventy".