13500012 has 12 divisors (see below), whose sum is σ = 31500056. Its totient is φ = 4500000.

The previous prime is 13500007. The next prime is 13500037. The reversal of 13500012 is 21000531.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Harshad number since it is a multiple of its sum of digits (12), and also a Moran number because the ratio is a prime number: 1125001 = 13500012 / (1 + 3 + 5 + 0 + 0 + 0 + 1 + 2).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 562489 + ... + 562512.

Almost surely, 2^13500012 is an apocalyptic number.

13500012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13500012 is an abundant number, since it is smaller than the sum of its proper divisors (18000044).

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

13500012 is a wasteful number, since it uses less digits than its factorization.

13500012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1125008 (or 1125006 counting only the distinct ones).

The product of its (nonzero) digits is 30, while the sum is 12.

The square root of 13500012 is about 3674.2362471676. The cubic root of 13500012 is about 238.1102283464.

Adding to 13500012 its reverse (21000531), we get a palindrome (34500543).

The spelling of 13500012 in words is "thirteen million, five hundred thousand, twelve".