248221018 has 8 divisors (see below), whose sum is σ = 372402612. Its totient is φ = 124086816.

The previous prime is 248221009. The next prime is 248221021. The reversal of 248221018 is 810122842.

It can be written as a sum of positive squares in 2 ways, for example, as 248157009 + 64009 = 15753^2 + 253^2 .

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

It is a super-2 number, since 2×248221018² = 123227347553912648, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7696 + ... + 23572.

Almost surely, 2^248221018 is an apocalyptic number.

248221018 is a deficient number, since it is larger than the sum of its proper divisors (124181594).

248221018 is a wasteful number, since it uses less digits than its factorization.

248221018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23696.

The product of its (nonzero) digits is 2048, while the sum is 28.

The square root of 248221018 is about 15755.0315137736. The cubic root of 248221018 is about 628.4627152946.

The spelling of 248221018 in words is "two hundred forty-eight million, two hundred twenty-one thousand, eighteen".