2547240 has 32 divisors (see below), whose sum is σ = 7642080. Its totient is φ = 679232.

The previous prime is 2547211. The next prime is 2547247. The reversal of 2547240 is 427452.

2547240 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 2547240.

It is not an unprimeable number, because it can be changed into a prime (2547247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10494 + ... + 10733.

It is an arithmetic number, because the mean of its divisors is an integer number (238815).

2^2547240 is an apocalyptic number.

2547240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2547240 is an abundant number, since it is smaller than the sum of its proper divisors (5094840).

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

2547240 is a wasteful number, since it uses less digits than its factorization.

2547240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21241 (or 21237 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 24.

The square root of 2547240 is about 1596.0075187793. The cubic root of 2547240 is about 136.5704127587.

Subtracting from 2547240 its sum of digits (24), we obtain a square (2547216 = 1596²).

The spelling of 2547240 in words is "two million, five hundred forty-seven thousand, two hundred forty".