13570428 has 24 divisors (see below), whose sum is σ = 31774288. Its totient is φ = 4507776.

The previous prime is 13570423. The next prime is 13570429. The reversal of 13570428 is 82407531.

It is a super-2 number, since 2×13570428² = 368313032206368, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13570395 and 13570404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13570423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1950 + ... + 5562.

Almost surely, 2^13570428 is an apocalyptic number.

It is an amenable number.

13570428 is an abundant number, since it is smaller than the sum of its proper divisors (18203860).

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

13570428 is a wasteful number, since it uses less digits than its factorization.

13570428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3933 (or 3931 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 13570428 is about 3683.8061838267. The cubic root of 13570428 is about 238.5235045771.

Adding to 13570428 its reverse (82407531), we get a palindrome (95977959).

The spelling of 13570428 in words is "thirteen million, five hundred seventy thousand, four hundred twenty-eight".