247270146 has 16 divisors (see below), whose sum is σ = 495945504. Its totient is φ = 82189184.

The previous prime is 247270129. The next prime is 247270147. The reversal of 247270146 is 641072742.

It is a super-2 number, since 2×247270146² = 122285050205722632, which contains 22 as substring.

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

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56256 + ... + 60491.

It is an arithmetic number, because the mean of its divisors is an integer number (30996594).

Almost surely, 2^247270146 is an apocalyptic number.

247270146 is an abundant number, since it is smaller than the sum of its proper divisors (248675358).

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

247270146 is a wasteful number, since it uses less digits than its factorization.

247270146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117105.

The product of its (nonzero) digits is 18816, while the sum is 33.

The square root of 247270146 is about 15724.8257859984. The cubic root of 247270146 is about 627.6591944365.

The spelling of 247270146 in words is "two hundred forty-seven million, two hundred seventy thousand, one hundred forty-six".