1540836 has 48 divisors (see below), whose sum is σ = 4361280. Its totient is φ = 466560.

The previous prime is 1540831. The next prime is 1540841. The reversal of 1540836 is 6380451.

It is an interprime number because it is at equal distance from previous prime (1540831) and next prime (1540841).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (1540831) 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, 540 + ... + 1836.

It is an arithmetic number, because the mean of its divisors is an integer number (90860).

2^1540836 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1540836, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2180640).

1540836 is an abundant number, since it is smaller than the sum of its proper divisors (2820444).

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

1540836 is a wasteful number, since it uses less digits than its factorization.

1540836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1321 (or 1313 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 1540836 is about 1241.3041528973. The cubic root of 1540836 is about 115.5009276363.

The spelling of 1540836 in words is "one million, five hundred forty thousand, eight hundred thirty-six".