13020457 has 8 divisors (see below), whose sum is σ = 13550976. Its totient is φ = 12500592.

The previous prime is 13020439. The next prime is 13020467. The reversal of 13020457 is 75402031.

13020457 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13020457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13020467) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 123 + ... + 5104.

It is an arithmetic number, because the mean of its divisors is an integer number (1693872).

Almost surely, 2^13020457 is an apocalyptic number.

It is an amenable number.

13020457 is a deficient number, since it is larger than the sum of its proper divisors (530519).

13020457 is an equidigital number, since it uses as much as digits as its factorization.

13020457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5327.

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 13020457 is about 3608.3870357821. The cubic root of 13020457 is about 235.2567406818.

Adding to 13020457 its reverse (75402031), we get a palindrome (88422488).

It can be divided in two parts, 1302045 and 7, that multiplied together give a triangular number (9114315 = T₄₂₆₉).

The spelling of 13020457 in words is "thirteen million, twenty thousand, four hundred fifty-seven".