247173980 has 24 divisors (see below), whose sum is σ = 528861312. Its totient is φ = 97003712.

The previous prime is 247173977. The next prime is 247174001. The reversal of 247173980 is 89371742.

It is a super-2 number, since 2×247173980² = 122189952778080800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 115532 + ... + 117651.

It is an arithmetic number, because the mean of its divisors is an integer number (22035888).

Almost surely, 2^247173980 is an apocalyptic number.

247173980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

247173980 is an abundant number, since it is smaller than the sum of its proper divisors (281687332).

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

247173980 is a wasteful number, since it uses less digits than its factorization.

247173980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233245 (or 233243 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 41.

The square root of 247173980 is about 15721.7677123153. The cubic root of 247173980 is about 627.5778160984.

The spelling of 247173980 in words is "two hundred forty-seven million, one hundred seventy-three thousand, nine hundred eighty".