1369880 has 32 divisors (see below), whose sum is σ = 3218400. Its totient is φ = 523776.

The previous prime is 1369871. The next prime is 1369883. The reversal of 1369880 is 889631.

It is a self number, because there is not a number n which added to its sum of digits gives 1369880.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1369883) 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, 176 + ... + 1664.

It is an arithmetic number, because the mean of its divisors is an integer number (100575).

2^1369880 is an apocalyptic number.

1369880 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 1369880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1609200).

1369880 is an abundant number, since it is smaller than the sum of its proper divisors (1848520).

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

1369880 is a wasteful number, since it uses less digits than its factorization.

1369880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1523 (or 1519 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 1369880 is about 1170.4187284899. The cubic root of 1369880 is about 111.0608113069.

Subtracting from 1369880 its reverse (889631), we obtain a square (480249 = 693²).

The spelling of 1369880 in words is "one million, three hundred sixty-nine thousand, eight hundred eighty".