1013988 has 12 divisors (see below), whose sum is σ = 2366000. Its totient is φ = 337992.

The previous prime is 1013933. The next prime is 1013993. The reversal of 1013988 is 8893101.

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

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, 42238 + ... + 42261.

2^1013988 is an apocalyptic number.

It is an amenable number.

1013988 is an abundant number, since it is smaller than the sum of its proper divisors (1352012).

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

1013988 is a wasteful number, since it uses less digits than its factorization.

1013988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84506 (or 84504 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 30.

The square root of 1013988 is about 1006.9697115604. The cubic root of 1013988 is about 100.4641093594.

The spelling of 1013988 in words is "one million, thirteen thousand, nine hundred eighty-eight".