10020457 has 4 divisors (see below), whose sum is σ = 10366020. Its totient is φ = 9674896.

The previous prime is 10020449. The next prime is 10020469. The reversal of 10020457 is 75402001.

10020457 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7160976 + 2859481 = 2676^2 + 1691^2 .

It is a cyclic number.

It is not a de Polignac number, because 10020457 - 2³ = 10020449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10020407) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 172738 + ... + 172795.

It is an arithmetic number, because the mean of its divisors is an integer number (2591505).

Almost surely, 2^10020457 is an apocalyptic number.

It is an amenable number.

10020457 is a deficient number, since it is larger than the sum of its proper divisors (345563).

10020457 is an equidigital number, since it uses as much as digits as its factorization.

10020457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 345562.

The product of its (nonzero) digits is 280, while the sum is 19.

The square root of 10020457 is about 3165.5105433405. The cubic root of 10020457 is about 215.5902798399.

Adding to 10020457 its reverse (75402001), we get a palindrome (85422458).

The spelling of 10020457 in words is "ten million, twenty thousand, four hundred fifty-seven".