1538140 has 12 divisors (see below), whose sum is σ = 3230136. Its totient is φ = 615248.

The previous prime is 1538111. The next prime is 1538167. The reversal of 1538140 is 418351.

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, 38434 + ... + 38473.

It is an arithmetic number, because the mean of its divisors is an integer number (269178).

2^1538140 is an apocalyptic number.

1538140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1538140 is an abundant number, since it is smaller than the sum of its proper divisors (1691996).

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

1538140 is a wasteful number, since it uses less digits than its factorization.

1538140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76916 (or 76914 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 1538140 is about 1240.2177228213. The cubic root of 1538140 is about 115.4335243369.

The spelling of 1538140 in words is "one million, five hundred thirty-eight thousand, one hundred forty".