11287738 has 48 divisors (see below), whose sum is σ = 22145184. Its totient is φ = 4263840.

The previous prime is 11287709. The next prime is 11287739. The reversal of 11287738 is 83778211.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a junction number, because it is equal to n+sod(n) for n = 11287697 and 11287706.

It is not an unprimeable number, because it can be changed into a prime (11287739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 39745 + ... + 40027.

It is an arithmetic number, because the mean of its divisors is an integer number (461358).

Almost surely, 2^11287738 is an apocalyptic number.

11287738 is a deficient number, since it is larger than the sum of its proper divisors (10857446).

11287738 is a wasteful number, since it uses less digits than its factorization.

11287738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 347 (or 340 counting only the distinct ones).

The product of its digits is 18816, while the sum is 37.

The square root of 11287738 is about 3359.7229052408. The cubic root of 11287738 is about 224.3205047368.

The spelling of 11287738 in words is "eleven million, two hundred eighty-seven thousand, seven hundred thirty-eight".