1148220 has 36 divisors (see below), whose sum is σ = 3483480. Its totient is φ = 306144.

The previous prime is 1148219. The next prime is 1148249. The reversal of 1148220 is 228411.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1148193 and 1148202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3010 + ... + 3369.

2^1148220 is an apocalyptic number.

1148220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1148220 is an abundant number, since it is smaller than the sum of its proper divisors (2335260).

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

1148220 is a wasteful number, since it uses less digits than its factorization.

1148220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6394 (or 6389 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

The square root of 1148220 is about 1071.5502788017. The cubic root of 1148220 is about 104.7148726967.

The spelling of 1148220 in words is "one million, one hundred forty-eight thousand, two hundred twenty".