13027428 has 18 divisors (see below), whose sum is σ = 32930534. Its totient is φ = 4342464.

The previous prime is 13027397. The next prime is 13027429. The reversal of 13027428 is 82472031.

It can be written as a sum of positive squares in only one way, i.e., 12446784 + 580644 = 3528^2 + 762^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is not an unprimeable number, because it can be changed into a prime (13027429) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 180901 + ... + 180972.

Almost surely, 2^13027428 is an apocalyptic number.

13027428 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

13027428 is an abundant number, since it is smaller than the sum of its proper divisors (19903106).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13027428 is a wasteful number, since it uses less digits than its factorization.

13027428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361883 (or 361878 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 13027428 is about 3609.3528505814. The cubic root of 13027428 is about 235.2987177581.

Adding to 13027428 its reverse (82472031), we get a palindrome (95499459).

The spelling of 13027428 in words is "thirteen million, twenty-seven thousand, four hundred twenty-eight".