247935480 has 128 divisors (see below), whose sum is σ = 848232000. Its totient is φ = 57434112.

The previous prime is 247935449. The next prime is 247935509. The reversal of 247935480 is 84539742.

It is a super-2 number, since 2×247935480² = 122944004485660800, 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 31 ways as a sum of consecutive naturals, for example, 21846 + ... + 31194.

Almost surely, 2^247935480 is an apocalyptic number.

247935480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 247935480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (424116000).

247935480 is an abundant number, since it is smaller than the sum of its proper divisors (600296520).

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

247935480 is a wasteful number, since it uses less digits than its factorization.

247935480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9393 (or 9389 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 42.

The square root of 247935480 is about 15745.9671027219. The cubic root of 247935480 is about 628.2216413764.

The spelling of 247935480 in words is "two hundred forty-seven million, nine hundred thirty-five thousand, four hundred eighty".