1017428 has 12 divisors (see below), whose sum is σ = 1858080. Its totient is φ = 486552.

The previous prime is 1017391. The next prime is 1017437. The reversal of 1017428 is 8247101.

1017428 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (23) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a nialpdrome in base 16.

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, 5438 + ... + 5621.

It is an arithmetic number, because the mean of its divisors is an integer number (154840).

2^1017428 is an apocalyptic number.

It is an amenable number.

1017428 is a deficient number, since it is larger than the sum of its proper divisors (840652).

1017428 is a wasteful number, since it uses less digits than its factorization.

1017428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11086 (or 11084 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 23.

The square root of 1017428 is about 1008.6763603852. The cubic root of 1017428 is about 100.5775907990.

Adding to 1017428 its sum of digits (23), we get a triangular number (1017451 = T₁₄₂₆).

The spelling of 1017428 in words is "one million, seventeen thousand, four hundred twenty-eight".