1540380 has 24 divisors (see below), whose sum is σ = 4313232. Its totient is φ = 410752.

The previous prime is 1540367. The next prime is 1540403. The reversal of 1540380 is 830451.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12777 + ... + 12896.

It is an arithmetic number, because the mean of its divisors is an integer number (179718).

2^1540380 is an apocalyptic number.

1540380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1540380 is an abundant number, since it is smaller than the sum of its proper divisors (2772852).

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

1540380 is a wasteful number, since it uses less digits than its factorization.

1540380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25685 (or 25683 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 1540380 is about 1241.1204615185. The cubic root of 1540380 is about 115.4895326059.

The spelling of 1540380 in words is "one million, five hundred forty thousand, three hundred eighty".