705742272 has 84 divisors (see below), whose sum is σ = 2051492976. Its totient is φ = 231920640.

The previous prime is 705742259. The next prime is 705742283. The reversal of 705742272 is 272247507.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32268 + ... + 49524.

Almost surely, 2^705742272 is an apocalyptic number.

705742272 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 705742272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1025746488).

705742272 is an abundant number, since it is smaller than the sum of its proper divisors (1345750704).

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

705742272 is a wasteful number, since it uses less digits than its factorization.

705742272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17346 (or 17333 counting only the distinct ones).

The product of its (nonzero) digits is 54880, while the sum is 36.

The square root of 705742272 is about 26565.8102078593. The cubic root of 705742272 is about 890.3252911843.

Adding to 705742272 its reverse (272247507), we get a palindrome (977989779).

The spelling of 705742272 in words is "seven hundred five million, seven hundred forty-two thousand, two hundred seventy-two".