247255164 has 144 divisors (see below), whose sum is σ = 702942240. Its totient is φ = 72783360.

The previous prime is 247255159. The next prime is 247255207. The reversal of 247255164 is 461552742.

It is a happy number.

247255164 is a `hidden beast` number, since 2 + 47 + 2 + 551 + 64 = 666.

It is a super-2 number, since 2×247255164² = 122270232249333792, which contains 22 as substring.

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

Its product of digits (67200) is a multiple of the sum of its prime factors (300).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1887379 + ... + 1887509.

Almost surely, 2^247255164 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 247255164, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (351471120).

247255164 is an abundant number, since it is smaller than the sum of its proper divisors (455687076).

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

247255164 is a wasteful number, since it uses less digits than its factorization.

247255164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300 (or 295 counting only the distinct ones).

The product of its digits is 67200, while the sum is 36.

The square root of 247255164 is about 15724.3493983058. The cubic root of 247255164 is about 627.6465176400.

The spelling of 247255164 in words is "two hundred forty-seven million, two hundred fifty-five thousand, one hundred sixty-four".