247473894 has 16 divisors (see below), whose sum is σ = 505479168. Its totient is φ = 80736072.

The previous prime is 247473893. The next prime is 247473911. The reversal of 247473894 is 498374742.

It is a super-2 number, since 2×247473894² = 122486656423046472, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (247473893) 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, 438502 + ... + 439065.

It is an arithmetic number, because the mean of its divisors is an integer number (31592448).

Almost surely, 2^247473894 is an apocalyptic number.

247473894 is an abundant number, since it is smaller than the sum of its proper divisors (258005274).

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

247473894 is a wasteful number, since it uses less digits than its factorization.

247473894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 877619.

The product of its digits is 1354752, while the sum is 48.

The square root of 247473894 is about 15731.3029975269. The cubic root of 247473894 is about 627.8315419662.

The spelling of 247473894 in words is "two hundred forty-seven million, four hundred seventy-three thousand, eight hundred ninety-four".