247981092 has 48 divisors (see below), whose sum is σ = 588225792. Its totient is φ = 81298080.

The previous prime is 247981087. The next prime is 247981093. The reversal of 247981092 is 290189742.

247981092 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×247981092² = 122989243979024928, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (247981093) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 305367 + ... + 306177.

It is an arithmetic number, because the mean of its divisors is an integer number (12254704).

Almost surely, 2^247981092 is an apocalyptic number.

It is an amenable number.

247981092 is an abundant number, since it is smaller than the sum of its proper divisors (340244700).

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

247981092 is a wasteful number, since it uses less digits than its factorization.

247981092 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1208 (or 1206 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 42.

The square root of 247981092 is about 15747.4154069803. The cubic root of 247981092 is about 628.2601630764.

The spelling of 247981092 in words is "two hundred forty-seven million, nine hundred eighty-one thousand, ninety-two".