1545040 has 80 divisors (see below), whose sum is σ = 4285440. Its totient is φ = 506880.

The previous prime is 1545029. The next prime is 1545041. The reversal of 1545040 is 405451.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 1544999 and 1545017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1545041) 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, 17316 + ... + 17404.

It is an arithmetic number, because the mean of its divisors is an integer number (53568).

2^1545040 is an apocalyptic number.

1545040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1545040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2142720).

1545040 is an abundant number, since it is smaller than the sum of its proper divisors (2740400).

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

1545040 is a wasteful number, since it uses less digits than its factorization.

1545040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140 (or 134 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 1545040 is about 1242.9963797212. The cubic root of 1545040 is about 115.6058760677.

The spelling of 1545040 in words is "one million, five hundred forty-five thousand, forty".