247213434 has 32 divisors (see below), whose sum is σ = 533602944. Its totient is φ = 75902400.

The previous prime is 247213423. The next prime is 247213441. The reversal of 247213434 is 434312742.

It is a super-2 number, since 2×247213434² = 122228963900144712, 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 15 ways as a sum of consecutive naturals, for example, 36084 + ... + 42384.

It is an arithmetic number, because the mean of its divisors is an integer number (16675092).

Almost surely, 2^247213434 is an apocalyptic number.

247213434 is an abundant number, since it is smaller than the sum of its proper divisors (286389510).

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

247213434 is a wasteful number, since it uses less digits than its factorization.

247213434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6822.

The product of its digits is 16128, while the sum is 30.

The square root of 247213434 is about 15723.0224193696. The cubic root of 247213434 is about 627.6112057212.

The spelling of 247213434 in words is "two hundred forty-seven million, two hundred thirteen thousand, four hundred thirty-four".