1220270 has 8 divisors (see below), whose sum is σ = 2196504. Its totient is φ = 488104.

The previous prime is 1220257. The next prime is 1220309. The reversal of 1220270 is 720221.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61004 + ... + 61023.

It is an arithmetic number, because the mean of its divisors is an integer number (274563).

2^1220270 is an apocalyptic number.

1220270 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1220270 is a deficient number, since it is larger than the sum of its proper divisors (976234).

1220270 is a wasteful number, since it uses less digits than its factorization.

1220270 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122034.

The product of its (nonzero) digits is 56, while the sum is 14.

The square root of 1220270 is about 1104.6583182143. The cubic root of 1220270 is about 106.8608550298.

Adding to 1220270 its reverse (720221), we get a palindrome (1940491).

The spelling of 1220270 in words is "one million, two hundred twenty thousand, two hundred seventy".