11280738 has 32 divisors (see below), whose sum is σ = 25893504. Its totient is φ = 3209472.

The previous prime is 11280733. The next prime is 11280743. The reversal of 11280738 is 83708211.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (11280733) and next prime (11280743).

It is not an unprimeable number, because it can be changed into a prime (11280733) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13756 + ... + 14552.

It is an arithmetic number, because the mean of its divisors is an integer number (809172).

Almost surely, 2^11280738 is an apocalyptic number.

11280738 is an abundant number, since it is smaller than the sum of its proper divisors (14612766).

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

11280738 is a wasteful number, since it uses less digits than its factorization.

11280738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1146.

The product of its (nonzero) digits is 2688, while the sum is 30.

The square root of 11280738 is about 3358.6809911035. The cubic root of 11280738 is about 224.2741249621.

Adding to 11280738 its reverse (83708211), we get a palindrome (94988949).

The spelling of 11280738 in words is "eleven million, two hundred eighty thousand, seven hundred thirty-eight".