248640544 has 12 divisors (see below), whose sum is σ = 489511134. Its totient is φ = 124320256.

The previous prime is 248640541. The next prime is 248640569. The reversal of 248640544 is 445046842.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 156250000 + 92390544 = 12500^2 + 9612^2 .

It is not an unprimeable number, because it can be changed into a prime (248640541) 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 as a sum of consecutive naturals, namely, 3884977 + ... + 3885040.

Almost surely, 2^248640544 is an apocalyptic number.

It is an amenable number.

248640544 is a deficient number, since it is larger than the sum of its proper divisors (240870590).

248640544 is an equidigital number, since it uses as much as digits as its factorization.

248640544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7770027 (or 7770019 counting only the distinct ones).

The product of its (nonzero) digits is 122880, while the sum is 37.

The square root of 248640544 is about 15768.3399253060. The cubic root of 248640544 is about 628.8165774193.

The spelling of 248640544 in words is "two hundred forty-eight million, six hundred forty thousand, five hundred forty-four".