247388 has 12 divisors (see below), whose sum is σ = 451920. Its totient is φ = 118272.

The previous prime is 247381. The next prime is 247391. The reversal of 247388 is 883742.

It is a super-2 number, since 2×247388² = 122401645088, which contains 22 as substring.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is an Ulam number.

It is a d-powerful number, because it can be written as 2¹¹ + 4⁴ + 3¹¹ + 7⁴ + 8⁵ + 8⁵ .

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 247388.

It is not an unprimeable number, because it can be changed into a prime (247381) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1253 + ... + 1436.

It is an arithmetic number, because the mean of its divisors is an integer number (37660).

2²⁴⁷³⁸⁸ is an apocalyptic number.

It is an amenable number.

247388 is a deficient number, since it is larger than the sum of its proper divisors (204532).

247388 is a wasteful number, since it uses less digits than its factorization.

247388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2716 (or 2714 counting only the distinct ones).

The product of its digits is 10752, while the sum is 32.

The square root of 247388 is about 497.3811415806. The cubic root of 247388 is about 62.7758896994.

The spelling of 247388 in words is "two hundred forty-seven thousand, three hundred eighty-eight".