1369520 has 80 divisors (see below), whose sum is σ = 3615840. Its totient is φ = 479232.

The previous prime is 1369517. The next prime is 1369531. The reversal of 1369520 is 259631.

It is a tau number, because it is divible by the number of its divisors (80).

It is a self number, because there is not a number n which added to its sum of digits gives 1369520.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25814 + ... + 25866.

It is an arithmetic number, because the mean of its divisors is an integer number (45198).

2^1369520 is an apocalyptic number.

1369520 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 1369520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1807920).

1369520 is an abundant number, since it is smaller than the sum of its proper divisors (2246320).

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

1369520 is a wasteful number, since it uses less digits than its factorization.

1369520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102 (or 96 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 26.

The square root of 1369520 is about 1170.2649272707. The cubic root of 1369520 is about 111.0510816481.

The spelling of 1369520 in words is "one million, three hundred sixty-nine thousand, five hundred twenty".