1381824 has 42 divisors (see below), whose sum is σ = 3962400. Its totient is φ = 460416.

The previous prime is 1381819. The next prime is 1381837. The reversal of 1381824 is 4281831.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 624 + ... + 1775.

2^1381824 is an apocalyptic number.

It is an amenable number.

1381824 is an abundant number, since it is smaller than the sum of its proper divisors (2580576).

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

1381824 is a wasteful number, since it uses less digits than its factorization.

1381824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2417 (or 2404 counting only the distinct ones).

The product of its digits is 1536, while the sum is 27.

The square root of 1381824 is about 1175.5101020408. The cubic root of 1381824 is about 111.3826578945.

The spelling of 1381824 in words is "one million, three hundred eighty-one thousand, eight hundred twenty-four".