247417980 has 24 divisors (see below), whose sum is σ = 692770512. Its totient is φ = 65978112.

The previous prime is 247417931. The next prime is 247417991. The reversal of 247417980 is 89714742.

It is a happy number.

It is a super-2 number, since 2×247417980² = 122431313654560800, 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, 2061757 + ... + 2061876.

It is an arithmetic number, because the mean of its divisors is an integer number (28865438).

Almost surely, 2^247417980 is an apocalyptic number.

247417980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

247417980 is an abundant number, since it is smaller than the sum of its proper divisors (445352532).

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

247417980 is a wasteful number, since it uses less digits than its factorization.

247417980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4123645 (or 4123643 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 42.

The square root of 247417980 is about 15729.5257398308. The cubic root of 247417980 is about 627.7842545313.

The spelling of 247417980 in words is "two hundred forty-seven million, four hundred seventeen thousand, nine hundred eighty".