247738081 has 16 divisors (see below), whose sum is σ = 262821888. Its totient is φ = 233164800.

The previous prime is 247738033. The next prime is 247738103. The reversal of 247738081 is 180837742.

247738081 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 247738081 - 2⁹ = 247737569 is a prime.

It is a super-2 number, since 2×247738081² = 122748313555125122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (247738481) 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, 280761 + ... + 281641.

It is an arithmetic number, because the mean of its divisors is an integer number (16426368).

Almost surely, 2^247738081 is an apocalyptic number.

It is an amenable number.

247738081 is a deficient number, since it is larger than the sum of its proper divisors (15083807).

247738081 is a wasteful number, since it uses less digits than its factorization.

247738081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1152.

The product of its (nonzero) digits is 75264, while the sum is 40.

The square root of 247738081 is about 15739.6976146303. The cubic root of 247738081 is about 628.0548731921.

The spelling of 247738081 in words is "two hundred forty-seven million, seven hundred thirty-eight thousand, eighty-one".