11280357 has 32 divisors (see below), whose sum is σ = 19200000. Its totient is φ = 6473520.

The previous prime is 11280341. The next prime is 11280377. The reversal of 11280357 is 75308211.

It is not a de Polignac number, because 11280357 - 2⁴ = 11280341 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 11280357.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11280307) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4644 + ... + 6642.

It is an arithmetic number, because the mean of its divisors is an integer number (600000).

Almost surely, 2^11280357 is an apocalyptic number.

It is an amenable number.

11280357 is a deficient number, since it is larger than the sum of its proper divisors (7919643).

11280357 is a wasteful number, since it uses less digits than its factorization.

11280357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2038 (or 2032 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 27.

The square root of 11280357 is about 3358.6242719304. The cubic root of 11280357 is about 224.2716000268.

Adding to 11280357 its reverse (75308211), we get a palindrome (86588568).

The spelling of 11280357 in words is "eleven million, two hundred eighty thousand, three hundred fifty-seven".