1481540 has 12 divisors (see below), whose sum is σ = 3111276. Its totient is φ = 592608.

The previous prime is 1481539. The next prime is 1481551. The reversal of 1481540 is 451841.

It can be written as a sum of positive squares in 2 ways, for example, as 432964 + 1048576 = 658^2 + 1024^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37019 + ... + 37058.

It is an arithmetic number, because the mean of its divisors is an integer number (259273).

2^1481540 is an apocalyptic number.

1481540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1481540 is an abundant number, since it is smaller than the sum of its proper divisors (1629736).

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

1481540 is a wasteful number, since it uses less digits than its factorization.

1481540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74086 (or 74084 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 23.

The square root of 1481540 is about 1217.1852775975. The cubic root of 1481540 is about 113.9998974042. Note that the first 3 decimals are identical.

The spelling of 1481540 in words is "one million, four hundred eighty-one thousand, five hundred forty".