11278945 has 8 divisors (see below), whose sum is σ = 13625280. Its totient is φ = 8962800.

The previous prime is 11278933. The next prime is 11278979. The reversal of 11278945 is 54987211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11278945 - 2²¹ = 9181793 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6715 + ... + 8224.

It is an arithmetic number, because the mean of its divisors is an integer number (1703160).

Almost surely, 2^11278945 is an apocalyptic number.

It is an amenable number.

11278945 is a deficient number, since it is larger than the sum of its proper divisors (2346335).

11278945 is a wasteful number, since it uses less digits than its factorization.

11278945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15095.

The product of its digits is 20160, while the sum is 37.

The square root of 11278945 is about 3358.4140602374. The cubic root of 11278945 is about 224.2622420276.

The spelling of 11278945 in words is "eleven million, two hundred seventy-eight thousand, nine hundred forty-five".