1487381 has 16 divisors (see below), whose sum is σ = 1866240. Its totient is φ = 1155840.

The previous prime is 1487359. The next prime is 1487383. The reversal of 1487381 is 1837841.

It is a de Polignac number, because none of the positive numbers 2^k-1487381 is a prime.

It is a super-2 number, since 2×1487381² = 4424604478322, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1487383) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3236 + ... + 3666.

It is an arithmetic number, because the mean of its divisors is an integer number (116640).

2^1487381 is an apocalyptic number.

It is an amenable number.

1487381 is a deficient number, since it is larger than the sum of its proper divisors (378859).

1487381 is a wasteful number, since it uses less digits than its factorization.

1487381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 484.

The product of its digits is 5376, while the sum is 32.

The square root of 1487381 is about 1219.5823055456. The cubic root of 1487381 is about 114.1495165482.

The spelling of 1487381 in words is "one million, four hundred eighty-seven thousand, three hundred eighty-one".