247245430 has 32 divisors (see below), whose sum is σ = 452874240. Its totient is φ = 97167840.

The previous prime is 247245419. The next prime is 247245443. The reversal of 247245430 is 34542742.

It is a happy number.

It is a super-2 number, since 2×247245430² = 122260605311769800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 247245392 and 247245401.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 339727 + ... + 340453.

It is an arithmetic number, because the mean of its divisors is an integer number (14152320).

Almost surely, 2^247245430 is an apocalyptic number.

247245430 is a deficient number, since it is larger than the sum of its proper divisors (205628810).

247245430 is a wasteful number, since it uses less digits than its factorization.

247245430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1284.

The product of its (nonzero) digits is 26880, while the sum is 31.

The square root of 247245430 is about 15724.0398752992. The cubic root of 247245430 is about 627.6382810862.

The spelling of 247245430 in words is "two hundred forty-seven million, two hundred forty-five thousand, four hundred thirty".