1228560 has 40 divisors (see below), whose sum is σ = 3809280. Its totient is φ = 327552.

The previous prime is 1228547. The next prime is 1228567. The reversal of 1228560 is 658221.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 1228560.

It is not an unprimeable number, because it can be changed into a prime (1228567) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2320 + ... + 2799.

It is an arithmetic number, because the mean of its divisors is an integer number (95232).

2^1228560 is an apocalyptic number.

1228560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1228560 is an abundant number, since it is smaller than the sum of its proper divisors (2580720).

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

1228560 is a wasteful number, since it uses less digits than its factorization.

1228560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5135 (or 5129 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 1228560 is about 1108.4042583823. The cubic root of 1228560 is about 107.1022982992.

The spelling of 1228560 in words is "one million, two hundred twenty-eight thousand, five hundred sixty".