2905440 has 48 divisors (see below), whose sum is σ = 9153648. Its totient is φ = 774656.

The previous prime is 2905439. The next prime is 2905447. The reversal of 2905440 is 445092.

It is a tau number, because it is divible by the number of its divisors (48).

It is a hoax number, since the sum of its digits (24) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 2905440.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2905447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2547 + ... + 3506.

It is an arithmetic number, because the mean of its divisors is an integer number (190701).

2^2905440 is an apocalyptic number.

2905440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2905440 is an abundant number, since it is smaller than the sum of its proper divisors (6248208).

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

2905440 is a wasteful number, since it uses less digits than its factorization.

2905440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6071 (or 6063 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 2905440 is about 1704.5351272414. The cubic root of 2905440 is about 142.6934276912.

The spelling of 2905440 in words is "two million, nine hundred five thousand, four hundred forty".