1380438 has 24 divisors (see below), whose sum is σ = 3049488. Its totient is φ = 451152.

The previous prime is 1380427. The next prime is 1380439. The reversal of 1380438 is 8340831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1380439) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 231 + ... + 1677.

It is an arithmetic number, because the mean of its divisors is an integer number (127062).

2^1380438 is an apocalyptic number.

1380438 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1380438 is an abundant number, since it is smaller than the sum of its proper divisors (1669050).

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

1380438 is a wasteful number, since it uses less digits than its factorization.

1380438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1508 (or 1505 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 1380438 is about 1174.9204228372. The cubic root of 1380438 is about 111.3454056813.

The spelling of 1380438 in words is "one million, three hundred eighty thousand, four hundred thirty-eight".