13099428 has 24 divisors (see below), whose sum is σ = 33961760. Its totient is φ = 4366440.

The previous prime is 13099421. The next prime is 13099483. The reversal of 13099428 is 82499031.

13099428 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a zygodrome in base 6.

It is a junction number, because it is equal to n+sod(n) for n = 13099392 and 13099401.

It is not an unprimeable number, because it can be changed into a prime (13099421) 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, 60538 + ... + 60753.

Almost surely, 2^13099428 is an apocalyptic number.

13099428 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

13099428 is an abundant number, since it is smaller than the sum of its proper divisors (20862332).

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

13099428 is a wasteful number, since it uses less digits than its factorization.

13099428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121304 (or 121296 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 13099428 is about 3619.3131945163. The cubic root of 13099428 is about 235.7314046599.

The spelling of 13099428 in words is "thirteen million, ninety-nine thousand, four hundred twenty-eight".