1157428 has 12 divisors (see below), whose sum is σ = 2144772. Its totient is φ = 544640.

The previous prime is 1157413. The next prime is 1157437. The reversal of 1157428 is 8247511.

It can be written as a sum of positive squares in 2 ways, for example, as 1036324 + 121104 = 1018^2 + 348^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1157396 and 1157405.

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, 8443 + ... + 8578.

It is an arithmetic number, because the mean of its divisors is an integer number (178731).

2^1157428 is an apocalyptic number.

It is an amenable number.

1157428 is a deficient number, since it is larger than the sum of its proper divisors (987344).

1157428 is a wasteful number, since it uses less digits than its factorization.

1157428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17042 (or 17040 counting only the distinct ones).

The product of its digits is 2240, while the sum is 28.

The square root of 1157428 is about 1075.8382778094. The cubic root of 1157428 is about 104.9940435019.

The spelling of 1157428 in words is "one million, one hundred fifty-seven thousand, four hundred twenty-eight".