13490028 has 36 divisors (see below), whose sum is σ = 34664448. Its totient is φ = 4422240.

The previous prime is 13490023. The next prime is 13490033. The reversal of 13490028 is 82009431.

It is an interprime number because it is at equal distance from previous prime (13490023) and next prime (13490033).

It is a tau number, because it is divible by the number of its divisors (36).

It is a junction number, because it is equal to n+sod(n) for n = 13489983 and 13490010.

It is not an unprimeable number, because it can be changed into a prime (13490023) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 876 + ... + 5267.

Almost surely, 2^13490028 is an apocalyptic number.

13490028 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

13490028 is an abundant number, since it is smaller than the sum of its proper divisors (21174420).

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

13490028 is a wasteful number, since it uses less digits than its factorization.

13490028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6214 (or 6209 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 13490028 is about 3672.8773461688. The cubic root of 13490028 is about 238.0515153416.

Adding to 13490028 its reverse (82009431), we get a palindrome (95499459).

The spelling of 13490028 in words is "thirteen million, four hundred ninety thousand, twenty-eight".