2945540 has 24 divisors (see below), whose sum is σ = 6662040. Its totient is φ = 1087488.

The previous prime is 2945531. The next prime is 2945609. The reversal of 2945540 is 455492.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 7744 + 2937796 = 88^2 + 1714^2 .

It is a Smith number, since the sum of its digits (29) coincides with the sum of the digits of its prime factors.

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, 5405 + ... + 5924.

It is an arithmetic number, because the mean of its divisors is an integer number (277585).

2^2945540 is an apocalyptic number.

2945540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2945540 is an abundant number, since it is smaller than the sum of its proper divisors (3716500).

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

2945540 is a wasteful number, since it uses less digits than its factorization.

2945540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11351 (or 11349 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 2945540 is about 1716.2575564291. The cubic root of 2945540 is about 143.3469009451.

The spelling of 2945540 in words is "two million, nine hundred forty-five thousand, five hundred forty".