1171428 has 48 divisors (see below), whose sum is σ = 2924544. Its totient is φ = 364320.

The previous prime is 1171427. The next prime is 1171447. The reversal of 1171428 is 8241711.

It is a junction number, because it is equal to n+sod(n) for n = 1171398 and 1171407.

It is not an unprimeable number, because it can be changed into a prime (1171421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17451 + ... + 17517.

It is an arithmetic number, because the mean of its divisors is an integer number (60928).

2^1171428 is an apocalyptic number.

It is an amenable number.

1171428 is an abundant number, since it is smaller than the sum of its proper divisors (1753116).

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

1171428 is a wasteful number, since it uses less digits than its factorization.

1171428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152 (or 150 counting only the distinct ones).

The product of its digits is 448, while the sum is 24.

The square root of 1171428 is about 1082.3252745825. The cubic root of 1171428 is about 105.4156765015.

The spelling of 1171428 in words is "one million, one hundred seventy-one thousand, four hundred twenty-eight".