1428527457 has 24 divisors (see below), whose sum is σ = 2373240896. Its totient is φ = 811096416.

The previous prime is 1428527393. The next prime is 1428527509. The reversal of 1428527457 is 7547258241.

1428527457 is a `hidden beast` number, since 142 + 8 + 52 + 7 + 457 = 666.

It is not a de Polignac number, because 1428527457 - 2⁶ = 1428527393 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1428527557) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 62323 + ... + 82104.

Almost surely, 2^1428527457 is an apocalyptic number.

It is an amenable number.

1428527457 is a deficient number, since it is larger than the sum of its proper divisors (944713439).

1428527457 is a wasteful number, since it uses less digits than its factorization.

1428527457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144597 (or 144594 counting only the distinct ones).

The product of its digits is 627200, while the sum is 45.

The square root of 1428527457 is about 37795.8656072328. The cubic root of 1428527457 is about 1126.2363249843.

The spelling of 1428527457 in words is "one billion, four hundred twenty-eight million, five hundred twenty-seven thousand, four hundred fifty-seven".