247270149 has 72 divisors (see below), whose sum is σ = 435472128. Its totient is φ = 132347520.

The previous prime is 247270147. The next prime is 247270157. The reversal of 247270149 is 941072742.

247270149 is a `hidden beast` number, since 247 + 270 + 149 = 666.

247270149 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 247270149 - 2¹ = 247270147 is a prime.

It is a super-2 number, since 2×247270149² = 122285053172964402, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (247270147) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 4053579 + ... + 4053639.

It is an arithmetic number, because the mean of its divisors is an integer number (6048224).

Almost surely, 2^247270149 is an apocalyptic number.

It is an amenable number.

247270149 is a deficient number, since it is larger than the sum of its proper divisors (188201979).

247270149 is a wasteful number, since it uses less digits than its factorization.

247270149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195 (or 155 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 36.

The square root of 247270149 is about 15724.8258813890. The cubic root of 247270149 is about 627.6591969749.

The spelling of 247270149 in words is "two hundred forty-seven million, two hundred seventy thousand, one hundred forty-nine".