247041992 has 12 divisors (see below), whose sum is σ = 463287105. Its totient is φ = 123498768.

The previous prime is 247041989. The next prime is 247042031. The reversal of 247041992 is 299140742.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 181010116 + 66031876 = 13454^2 + 8126^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=11114.

It is a super-2 number, since 2×247041992² = 122059491622656128, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 41678 + ... + 47234.

Almost surely, 2^247041992 is an apocalyptic number.

It is an amenable number.

247041992 is a deficient number, since it is larger than the sum of its proper divisors (216245113).

247041992 is an frugal number, since it uses more digits than its factorization.

247041992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11120 (or 5559 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 247041992 is about 15717.5695322146. The cubic root of 247041992 is about 627.4660898169.

The spelling of 247041992 in words is "two hundred forty-seven million, forty-one thousand, nine hundred ninety-two".