247828742 has 32 divisors (see below), whose sum is σ = 455673600. Its totient is φ = 98718048.

The previous prime is 247828729. The next prime is 247828769.

247828742 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×247828742² = 122838170722605128, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 247828693 and 247828702.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5309 + ... + 22887.

It is an arithmetic number, because the mean of its divisors is an integer number (14239800).

Almost surely, 2^247828742 is an apocalyptic number.

247828742 is a deficient number, since it is larger than the sum of its proper divisors (207844858).

247828742 is a wasteful number, since it uses less digits than its factorization.

247828742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17660.

The product of its digits is 401408, while the sum is 44.

The square root of 247828742 is about 15742.5773620459. The cubic root of 247828742 is about 628.1314771310.

The spelling of 247828742 in words is "two hundred forty-seven million, eight hundred twenty-eight thousand, seven hundred forty-two".