247240434 has 16 divisors (see below), whose sum is σ = 565121088. Its totient is φ = 70640112.

The previous prime is 247240429. The next prime is 247240459. The reversal of 247240434 is 434042742.

It is a happy number.

It is a super-2 number, since 2×247240434² = 122255664409016712, which contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 2943297 + ... + 2943380.

It is an arithmetic number, because the mean of its divisors is an integer number (35320068).

Almost surely, 2^247240434 is an apocalyptic number.

247240434 is an abundant number, since it is smaller than the sum of its proper divisors (317880654).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

247240434 is a wasteful number, since it uses less digits than its factorization.

247240434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5886689.

The product of its (nonzero) digits is 21504, while the sum is 30.

The square root of 247240434 is about 15723.8810094709. The cubic root of 247240434 is about 627.6340535703.

The spelling of 247240434 in words is "two hundred forty-seven million, two hundred forty thousand, four hundred thirty-four".