2503978 has 8 divisors (see below), whose sum is σ = 3769668. Its totient is φ = 1247424.

The previous prime is 2503961. The next prime is 2503979. The reversal of 2503978 is 8793052.

It can be written as a sum of positive squares in 2 ways, for example, as 2442969 + 61009 = 1563^2 + 247^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (2503979) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1551 + ... + 2722.

2^2503978 is an apocalyptic number.

2503978 is a deficient number, since it is larger than the sum of its proper divisors (1265690).

2503978 is a wasteful number, since it uses less digits than its factorization.

2503978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4568.

The product of its (nonzero) digits is 15120, while the sum is 34.

The square root of 2503978 is about 1582.3962841210. The cubic root of 2503978 is about 135.7928290371.

It can be divided in two parts, 2503 and 978, that added together give a square (3481 = 59²).

The spelling of 2503978 in words is "two million, five hundred three thousand, nine hundred seventy-eight".