1157272734 has 8 divisors (see below), whose sum is σ = 2314545480. Its totient is φ = 385757576.

The previous prime is 1157272693. The next prime is 1157272763. The reversal of 1157272734 is 4372727511.

It is a sphenic number, since it is the product of 3 distinct primes.

1157272734 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 1157272692 and 1157272701.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 96439389 + ... + 96439400.

It is an arithmetic number, because the mean of its divisors is an integer number (289318185).

Almost surely, 2^1157272734 is an apocalyptic number.

1157272734 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1157272734 is a wasteful number, since it uses less digits than its factorization.

1157272734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192878794.

The product of its digits is 82320, while the sum is 39.

The square root of 1157272734 is about 34018.7115276284. The cubic root of 1157272734 is about 1049.8934839796.

The spelling of 1157272734 in words is "one billion, one hundred fifty-seven million, two hundred seventy-two thousand, seven hundred thirty-four".