247828741 has 4 divisors (see below), whose sum is σ = 247917472. Its totient is φ = 247740012.

The previous prime is 247828729. The next prime is 247828769. The reversal of 247828741 is 147828742.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 247828741 - 2⁵ = 247828709 is a prime.

It is a super-2 number, since 2×247828741² = 122838169731290162, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (247828781) 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, 40035 + ... + 45808.

It is an arithmetic number, because the mean of its divisors is an integer number (61979368).

Almost surely, 2^247828741 is an apocalyptic number.

It is an amenable number.

247828741 is a deficient number, since it is larger than the sum of its proper divisors (88731).

247828741 is an equidigital number, since it uses as much as digits as its factorization.

247828741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88730.

The product of its digits is 200704, while the sum is 43.

The square root of 247828741 is about 15742.5773302849. The cubic root of 247828741 is about 628.1314762861.

Subtracting from 247828741 its reverse (147828742), we obtain a palindrome (99999999).

The spelling of 247828741 in words is "two hundred forty-seven million, eight hundred twenty-eight thousand, seven hundred forty-one".