64028457 has 12 divisors (see below), whose sum is σ = 93162420. Its totient is φ = 42373248.

The previous prime is 64028417. The next prime is 64028501. The reversal of 64028457 is 75482046.

64028457 is a `hidden beast` number, since 640 + 2 + 8 + 4 + 5 + 7 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 52577001 + 11451456 = 7251^2 + 3384^2 .

It is not a de Polignac number, because 64028457 - 2¹⁰ = 64027433 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64028407) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24732 + ... + 27197.

It is an arithmetic number, because the mean of its divisors is an integer number (7763535).

Almost surely, 2^64028457 is an apocalyptic number.

It is an amenable number.

64028457 is a deficient number, since it is larger than the sum of its proper divisors (29133963).

64028457 is a wasteful number, since it uses less digits than its factorization.

64028457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52072 (or 52069 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 36.

The square root of 64028457 is about 8001.7783648387. The cubic root of 64028457 is about 400.0592766319.

The spelling of 64028457 in words is "sixty-four million, twenty-eight thousand, four hundred fifty-seven".