247172894 has 16 divisors (see below), whose sum is σ = 392899248. Its totient is φ = 116218752.

The previous prime is 247172879. The next prime is 247172903. The reversal of 247172894 is 498271742.

It is a super-2 number, since 2×247172894² = 122188879056670472, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52589 + ... + 57095.

It is an arithmetic number, because the mean of its divisors is an integer number (24556203).

Almost surely, 2^247172894 is an apocalyptic number.

247172894 is a deficient number, since it is larger than the sum of its proper divisors (145726354).

247172894 is a wasteful number, since it uses less digits than its factorization.

247172894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6139.

The product of its digits is 225792, while the sum is 44.

The square root of 247172894 is about 15721.7331741764. The cubic root of 247172894 is about 627.5768969746.

The spelling of 247172894 in words is "two hundred forty-seven million, one hundred seventy-two thousand, eight hundred ninety-four".