1238788 has 12 divisors (see below), whose sum is σ = 2203852. Its totient is φ = 609120.

The previous prime is 1238771. The next prime is 1238789. The reversal of 1238788 is 8878321.

It can be written as a sum of positive squares in 2 ways, for example, as 627264 + 611524 = 792^2 + 782^2 .

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (1238789) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2295 + ... + 2782.

2^1238788 is an apocalyptic number.

It is an amenable number.

1238788 is a deficient number, since it is larger than the sum of its proper divisors (965064).

1238788 is a wasteful number, since it uses less digits than its factorization.

1238788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5142 (or 5140 counting only the distinct ones).

The product of its digits is 21504, while the sum is 37.

The square root of 1238788 is about 1113.0085354569. The cubic root of 1238788 is about 107.3986930937.

It can be divided in two parts, 123 and 8788, that added together give a triangular number (8911 = T₁₃₃).

The spelling of 1238788 in words is "one million, two hundred thirty-eight thousand, seven hundred eighty-eight".