1538980 has 12 divisors (see below), whose sum is σ = 3231900. Its totient is φ = 615584.

The previous prime is 1538963. The next prime is 1538983. The reversal of 1538980 is 898351.

It can be written as a sum of positive squares in 2 ways, for example, as 802816 + 736164 = 896^2 + 858^2 .

It is not an unprimeable number, because it can be changed into a prime (1538983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38455 + ... + 38494.

It is an arithmetic number, because the mean of its divisors is an integer number (269325).

2^1538980 is an apocalyptic number.

1538980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1538980 is an abundant number, since it is smaller than the sum of its proper divisors (1692920).

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

1538980 is a wasteful number, since it uses less digits than its factorization.

1538980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76958 (or 76956 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 34.

The square root of 1538980 is about 1240.5563268147. The cubic root of 1538980 is about 115.4545338060.

The spelling of 1538980 in words is "one million, five hundred thirty-eight thousand, nine hundred eighty".