247840246 has 16 divisors (see below), whose sum is σ = 396734976. Its totient is φ = 115710336.

The previous prime is 247840231. The next prime is 247840253. The reversal of 247840246 is 642048742.

247840246 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×247840246² = 122849575074681032, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24381 + ... + 33016.

It is an arithmetic number, because the mean of its divisors is an integer number (24795936).

Almost surely, 2^247840246 is an apocalyptic number.

247840246 is a deficient number, since it is larger than the sum of its proper divisors (148894730).

247840246 is a wasteful number, since it uses less digits than its factorization.

247840246 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57543.

The product of its (nonzero) digits is 86016, while the sum is 37.

The square root of 247840246 is about 15742.9427363502. The cubic root of 247840246 is about 628.1411960907.

Adding to 247840246 its reverse (642048742), we get a palindrome (889888988).

It can be divided in two parts, 2478 and 40246, that added together give a palindrome (42724).

The spelling of 247840246 in words is "two hundred forty-seven million, eight hundred forty thousand, two hundred forty-six".