247478112 has 384 divisors, whose sum is σ = 914457600. Its totient is φ = 63479808.

The previous prime is 247478111. The next prime is 247478113. The reversal of 247478112 is 211874742.

247478112 is a `hidden beast` number, since 2 + 474 + 78 + 112 = 666.

It is an interprime number because it is at equal distance from previous prime (247478111) and next prime (247478113).

It is a super-2 number, since 2×247478112² = 122490831838169088, which contains 22 as substring.

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

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (247478111) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2981623 + ... + 2981705.

It is an arithmetic number, because the mean of its divisors is an integer number (2381400).

Almost surely, 2^247478112 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 247478112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (457228800).

247478112 is an abundant number, since it is smaller than the sum of its proper divisors (666979488).

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

247478112 is a wasteful number, since it uses less digits than its factorization.

247478112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155 (or 141 counting only the distinct ones).

The product of its digits is 25088, while the sum is 36.

The square root of 247478112 is about 15731.4370608664. The cubic root of 247478112 is about 627.8351089127.

The spelling of 247478112 in words is "two hundred forty-seven million, four hundred seventy-eight thousand, one hundred twelve".