1017428056 has 8 divisors (see below), whose sum is σ = 1907677620. Its totient is φ = 508714024.

The previous prime is 1017428047. The next prime is 1017428057. The reversal of 1017428056 is 6508247101.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1017428057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63589246 + ... + 63589261.

Almost surely, 2^1017428056 is an apocalyptic number.

It is an amenable number.

1017428056 is a deficient number, since it is larger than the sum of its proper divisors (890249564).

1017428056 is a wasteful number, since it uses less digits than its factorization.

1017428056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127178513 (or 127178509 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 34.

The square root of 1017428056 is about 31897.1480856831. The cubic root of 1017428056 is about 1005.7759264429.

The spelling of 1017428056 in words is "one billion, seventeen million, four hundred twenty-eight thousand, fifty-six".