1340988 has 24 divisors (see below), whose sum is σ = 3413760. Its totient is φ = 406320.

The previous prime is 1340981. The next prime is 1341007. The reversal of 1340988 is 8890431.

It is a super-2 number, since 2×1340988² = 3596497632288, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1340981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4948 + ... + 5211.

It is an arithmetic number, because the mean of its divisors is an integer number (142240).

2^1340988 is an apocalyptic number.

It is an amenable number.

1340988 is an abundant number, since it is smaller than the sum of its proper divisors (2072772).

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

1340988 is a wasteful number, since it uses less digits than its factorization.

1340988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10177 (or 10175 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 1340988 is about 1158.0103626479. The cubic root of 1340988 is about 110.2744661124.

The spelling of 1340988 in words is "one million, three hundred forty thousand, nine hundred eighty-eight".