247404859520 has 768 divisors, whose sum is σ = 770675834880. Its totient is φ = 74271375360.

The previous prime is 247404859517. The next prime is 247404859549. The reversal of 247404859520 is 25958404742.

It is a super-2 number, since 2×247404859520² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1948069697 + ... + 1948069823.

It is an arithmetic number, because the mean of its divisors is an integer number (1003484160).

Almost surely, 2^247404859520 is an apocalyptic number.

247404859520 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 247404859520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (385337917440).

247404859520 is an abundant number, since it is smaller than the sum of its proper divisors (523270975360).

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

247404859520 is a wasteful number, since it uses less digits than its factorization.

247404859520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 293 (or 268 counting only the distinct ones).

The product of its (nonzero) digits is 3225600, while the sum is 50.

The spelling of 247404859520 in words is "two hundred forty-seven billion, four hundred four million, eight hundred fifty-nine thousand, five hundred twenty".