247281132 has 96 divisors (see below), whose sum is σ = 679985152. Its totient is φ = 68475456.

The previous prime is 247281131. The next prime is 247281137. The reversal of 247281132 is 231182742.

It is a super-2 number, since 2×247281132² = 122295916486402848, 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 247281132.

It is not an unprimeable number, because it can be changed into a prime (247281131) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 805323 + ... + 805629.

Almost surely, 2^247281132 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 247281132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (339992576).

247281132 is an abundant number, since it is smaller than the sum of its proper divisors (432704020).

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

247281132 is a wasteful number, since it uses less digits than its factorization.

247281132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 587 (or 585 counting only the distinct ones).

The product of its digits is 5376, while the sum is 30.

The square root of 247281132 is about 15725.1751023637. The cubic root of 247281132 is about 627.6684897516.

The spelling of 247281132 in words is "two hundred forty-seven million, two hundred eighty-one thousand, one hundred thirty-two".