1154428 has 12 divisors (see below), whose sum is σ = 2203992. Its totient is φ = 524720.

The previous prime is 1154411. The next prime is 1154431. The reversal of 1154428 is 8244511.

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, 13075 + ... + 13162.

It is an arithmetic number, because the mean of its divisors is an integer number (183666).

2^1154428 is an apocalyptic number.

It is an amenable number.

1154428 is a deficient number, since it is larger than the sum of its proper divisors (1049564).

1154428 is a wasteful number, since it uses less digits than its factorization.

1154428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26252 (or 26250 counting only the distinct ones).

The product of its digits is 1280, while the sum is 25.

The square root of 1154428 is about 1074.4431115699. The cubic root of 1154428 is about 104.9032517743.

Adding to 1154428 its reverse (8244511), we get a palindrome (9398939).

The spelling of 1154428 in words is "one million, one hundred fifty-four thousand, four hundred twenty-eight".