11279457 has 18 divisors (see below), whose sum is σ = 18953298. Its totient is φ = 6445152.

The previous prime is 11279447. The next prime is 11279461. The reversal of 11279457 is 75497211.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 6780816 + 4498641 = 2604^2 + 2121^2 .

It is not a de Polignac number, because 11279457 - 2⁴ = 11279441 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11279417) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 12348 + ... + 13229.

It is an arithmetic number, because the mean of its divisors is an integer number (1052961).

Almost surely, 2^11279457 is an apocalyptic number.

It is an amenable number.

11279457 is a deficient number, since it is larger than the sum of its proper divisors (7673841).

11279457 is a wasteful number, since it uses less digits than its factorization.

11279457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25597 (or 25587 counting only the distinct ones).

The product of its digits is 17640, while the sum is 36.

The square root of 11279457 is about 3358.4902858278. The cubic root of 11279457 is about 224.2656353867.

The spelling of 11279457 in words is "eleven million, two hundred seventy-nine thousand, four hundred fifty-seven".