1381488 has 40 divisors (see below), whose sum is σ = 3781008. Its totient is φ = 433152.

The previous prime is 1381487. The next prime is 1381489. The reversal of 1381488 is 8841831.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1381487) and next prime (1381489).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1381483) 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, 31 + ... + 1662.

2^1381488 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1381488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1890504).

1381488 is an abundant number, since it is smaller than the sum of its proper divisors (2399520).

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

1381488 is a wasteful number, since it uses less digits than its factorization.

1381488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1721 (or 1715 counting only the distinct ones).

The product of its digits is 6144, while the sum is 33.

The square root of 1381488 is about 1175.3671766729. The cubic root of 1381488 is about 111.3736293432.

The spelling of 1381488 in words is "one million, three hundred eighty-one thousand, four hundred eighty-eight".