1381480 has 16 divisors (see below), whose sum is σ = 3108420. Its totient is φ = 552576.

The previous prime is 1381459. The next prime is 1381483. The reversal of 1381480 is 841831.

It can be written as a sum of positive squares in 2 ways, for example, as 1295044 + 86436 = 1138^2 + 294^2 .

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 3 ways as a sum of consecutive naturals, for example, 17229 + ... + 17308.

2^1381480 is an apocalyptic number.

1381480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1381480 is an abundant number, since it is smaller than the sum of its proper divisors (1726940).

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

1381480 is a wasteful number, since it uses less digits than its factorization.

1381480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34548 (or 34544 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 25.

The square root of 1381480 is about 1175.3637734761. The cubic root of 1381480 is about 111.3734143598.

It can be divided in two parts, 13 and 81480, that multiplied together give a triangular number (1059240 = T₁₄₅₅).

The spelling of 1381480 in words is "one million, three hundred eighty-one thousand, four hundred eighty".