1336720 has 120 divisors (see below), whose sum is σ = 4071168. Its totient is φ = 403200.

The previous prime is 1336663. The next prime is 1336729. The reversal of 1336720 is 276331.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a nialpdrome in base 11.

It is a junction number, because it is equal to n+sod(n) for n = 1336691 and 1336700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1336729) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 43105 + ... + 43135.

2^1336720 is an apocalyptic number.

1336720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1336720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2035584).

1336720 is an abundant number, since it is smaller than the sum of its proper divisors (2734448).

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

1336720 is a wasteful number, since it uses less digits than its factorization.

1336720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69 (or 56 counting only the distinct ones).

The product of its (nonzero) digits is 756, while the sum is 22.

The square root of 1336720 is about 1156.1660780355. The cubic root of 1336720 is about 110.1573505666.

The spelling of 1336720 in words is "one million, three hundred thirty-six thousand, seven hundred twenty".