247670280 has 384 divisors, whose sum is σ = 1004814720. Its totient is φ = 51978240.

The previous prime is 247670261. The next prime is 247670287. The reversal of 247670280 is 82076742.

It is a super-2 number, since 2×247670280² = 122681135190556800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (247670287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 875019 + ... + 875301.

It is an arithmetic number, because the mean of its divisors is an integer number (2616705).

Almost surely, 2^247670280 is an apocalyptic number.

247670280 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 247670280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (502407360).

247670280 is an abundant number, since it is smaller than the sum of its proper divisors (757144440).

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

247670280 is a wasteful number, since it uses less digits than its factorization.

247670280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 341 (or 334 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 36.

The square root of 247670280 is about 15737.5436456901. The cubic root of 247670280 is about 627.9975725764.

The spelling of 247670280 in words is "two hundred forty-seven million, six hundred seventy thousand, two hundred eighty".