248891505 has 16 divisors (see below), whose sum is σ = 398783040. Its totient is φ = 132556608.

The previous prime is 248891501. The next prime is 248891521. The reversal of 248891505 is 505198842.

It is a happy number.

It is not a de Polignac number, because 248891505 - 2² = 248891501 is a prime.

It is a super-2 number, since 2×248891505² = 123893962522330050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (248891501) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 142 + ... + 22311.

It is an arithmetic number, because the mean of its divisors is an integer number (24923940).

Almost surely, 2^248891505 is an apocalyptic number.

It is an amenable number.

248891505 is a deficient number, since it is larger than the sum of its proper divisors (149891535).

248891505 is a wasteful number, since it uses less digits than its factorization.

248891505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23200.

The product of its (nonzero) digits is 115200, while the sum is 42.

The square root of 248891505 is about 15776.2956678683. The cubic root of 248891505 is about 629.0280679651.

The spelling of 248891505 in words is "two hundred forty-eight million, eight hundred ninety-one thousand, five hundred five".