247930246 has 4 divisors (see below), whose sum is σ = 371895372. Its totient is φ = 123965122.

The previous prime is 247930223. The next prime is 247930253. The reversal of 247930246 is 642039742.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 642039742 = 2 ⋅321019871.

It is a super-2 number, since 2×247930246² = 122938813763241032, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61982560 + ... + 61982563.

It is an arithmetic number, because the mean of its divisors is an integer number (92973843).

Almost surely, 2^247930246 is an apocalyptic number.

247930246 is a deficient number, since it is larger than the sum of its proper divisors (123965126).

247930246 is a wasteful number, since it uses less digits than its factorization.

247930246 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123965125.

The product of its (nonzero) digits is 72576, while the sum is 37.

The square root of 247930246 is about 15745.8009005576. The cubic root of 247930246 is about 628.2172206898.

Adding to 247930246 its reverse (642039742), we get a palindrome (889969988).

The spelling of 247930246 in words is "two hundred forty-seven million, nine hundred thirty thousand, two hundred forty-six".