1148720 has 40 divisors (see below), whose sum is σ = 2718576. Its totient is φ = 451328.

The previous prime is 1148713. The next prime is 1148729. The reversal of 1148720 is 278411.

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

It is not an unprimeable number, because it can be changed into a prime (1148729) 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, 6554 + ... + 6726.

2^1148720 is an apocalyptic number.

1148720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1148720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1359288).

1148720 is an abundant number, since it is smaller than the sum of its proper divisors (1569856).

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

1148720 is a wasteful number, since it uses less digits than its factorization.

1148720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269 (or 263 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 23.

The square root of 1148720 is about 1071.7835602397. The cubic root of 1148720 is about 104.7300700858.

The spelling of 1148720 in words is "one million, one hundred forty-eight thousand, seven hundred twenty".