247689234 has 48 divisors (see below), whose sum is σ = 580612032. Its totient is φ = 75860064.

The previous prime is 247689229. The next prime is 247689293. The reversal of 247689234 is 432986742.

It is a super-2 number, since 2×247689234² = 122699913279013512, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 247689234.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 50787 + ... + 55449.

It is an arithmetic number, because the mean of its divisors is an integer number (12096084).

Almost surely, 2^247689234 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 247689234, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (290306016).

247689234 is an abundant number, since it is smaller than the sum of its proper divisors (332922798).

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

247689234 is a wasteful number, since it uses less digits than its factorization.

247689234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4911 (or 4908 counting only the distinct ones).

The product of its digits is 580608, while the sum is 45.

The square root of 247689234 is about 15738.1458247152. The cubic root of 247689234 is about 628.0135922113.

The spelling of 247689234 in words is "two hundred forty-seven million, six hundred eighty-nine thousand, two hundred thirty-four".