1172280 has 32 divisors (see below), whose sum is σ = 3517200. Its totient is φ = 312576.

The previous prime is 1172279. The next prime is 1172317. The reversal of 1172280 is 822711.

It is a congruent number.

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, 4765 + ... + 5004.

2^1172280 is an apocalyptic number.

1172280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1172280 is an abundant number, since it is smaller than the sum of its proper divisors (2344920).

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

1172280 is a wasteful number, since it uses less digits than its factorization.

1172280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9783 (or 9779 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 21.

The square root of 1172280 is about 1082.7188000584. The cubic root of 1172280 is about 105.4412271942.

Adding to 1172280 its reverse (822711), we get a palindrome (1994991).

The spelling of 1172280 in words is "one million, one hundred seventy-two thousand, two hundred eighty".