2520747 has 16 divisors (see below), whose sum is σ = 3780000. Its totient is φ = 1660032.

The previous prime is 2520697. The next prime is 2520769. The reversal of 2520747 is 7470252.

It is not a de Polignac number, because 2520747 - 2⁸ = 2520491 is a prime.

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

2520747 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 2520747.

It is not an unprimeable number, because it can be changed into a prime (2520797) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1879 + ... + 2927.

It is an arithmetic number, because the mean of its divisors is an integer number (236250).

2^2520747 is an apocalyptic number.

2520747 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

2520747 is a deficient number, since it is larger than the sum of its proper divisors (1259253).

2520747 is a wasteful number, since it uses less digits than its factorization.

2520747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1147 (or 1141 counting only the distinct ones).

The product of its (nonzero) digits is 3920, while the sum is 27.

The square root of 2520747 is about 1587.6860520896. The cubic root of 2520747 is about 136.0952871727.

Adding to 2520747 its reverse (7470252), we get a palindrome (9990999).

The spelling of 2520747 in words is "two million, five hundred twenty thousand, seven hundred forty-seven".