1369720 has 48 divisors (see below), whose sum is σ = 3399480. Its totient is φ = 496320.

The previous prime is 1369657. The next prime is 1369723. The reversal of 1369720 is 279631.

It is a super-2 number, since 2×1369720² = 3752265756800, which contains 22 as substring.

It is a Smith number, since the sum of its digits (28) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1369723) 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 11 ways as a sum of consecutive naturals, for example, 4699 + ... + 4981.

2^1369720 is an apocalyptic number.

1369720 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 1369720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1699740).

1369720 is an abundant number, since it is smaller than the sum of its proper divisors (2029760).

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

1369720 is a wasteful number, since it uses less digits than its factorization.

1369720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 316 (or 301 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 28.

The square root of 1369720 is about 1170.3503748878. The cubic root of 1369720 is about 111.0564872246.

The spelling of 1369720 in words is "one million, three hundred sixty-nine thousand, seven hundred twenty".