1288938 has 16 divisors (see below), whose sum is σ = 2946240. Its totient is φ = 368256.

The previous prime is 1288933. The next prime is 1288939. The reversal of 1288938 is 8398821.

It is a super-2 number, since 2×1288938² = 3322722335688, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1288896 and 1288905.

It is not an unprimeable number, because it can be changed into a prime (1288933) 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, 15303 + ... + 15386.

It is an arithmetic number, because the mean of its divisors is an integer number (184140).

2^1288938 is an apocalyptic number.

1288938 is an abundant number, since it is smaller than the sum of its proper divisors (1657302).

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

1288938 is a wasteful number, since it uses less digits than its factorization.

1288938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30701.

The product of its digits is 27648, while the sum is 39.

The square root of 1288938 is about 1135.3140534671. The cubic root of 1288938 is about 108.8288422849.

The spelling of 1288938 in words is "one million, two hundred eighty-eight thousand, nine hundred thirty-eight".