2493945 has 24 divisors (see below), whose sum is σ = 4362696. Its totient is φ = 1317888.

The previous prime is 2493943. The next prime is 2493947. The reversal of 2493945 is 5493942.

It is an interprime number because it is at equal distance from previous prime (2493943) and next prime (2493947).

It can be written as a sum of positive squares in 4 ways, for example, as 69696 + 2424249 = 264^2 + 1557^2 .

It is not a de Polignac number, because 2493945 - 2¹ = 2493943 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2493943) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6889 + ... + 7241.

It is an arithmetic number, because the mean of its divisors is an integer number (181779).

2^2493945 is an apocalyptic number.

It is an amenable number.

2493945 is a deficient number, since it is larger than the sum of its proper divisors (1868751).

2493945 is a wasteful number, since it uses less digits than its factorization.

2493945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 521 (or 518 counting only the distinct ones).

The product of its digits is 38880, while the sum is 36.

The square root of 2493945 is about 1579.2229101682. Note that the first 3 decimals coincide. The cubic root of 2493945 is about 135.6112202583.

The spelling of 2493945 in words is "two million, four hundred ninety-three thousand, nine hundred forty-five".