247034844 has 72 divisors (see below), whose sum is σ = 723760128. Its totient is φ = 69582240.

The previous prime is 247034833. The next prime is 247034849. The reversal of 247034844 is 448430742.

It is a happy number.

It is a super-2 number, since 2×247034844² = 122052428300208672, which contains 22 as substring.

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

It is a junction number, because it is equal to n+sod(n) for n = 247034799 and 247034808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (247034849) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10989 + ... + 24795.

It is an arithmetic number, because the mean of its divisors is an integer number (10052224).

Almost surely, 2^247034844 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 247034844, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (361880064).

247034844 is an abundant number, since it is smaller than the sum of its proper divisors (476725284).

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

247034844 is a wasteful number, since it uses less digits than its factorization.

247034844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13895 (or 13890 counting only the distinct ones).

The product of its (nonzero) digits is 86016, while the sum is 36.

The square root of 247034844 is about 15717.3421417236. The cubic root of 247034844 is about 627.4600379836.

The spelling of 247034844 in words is "two hundred forty-seven million, thirty-four thousand, eight hundred forty-four".