1264220 has 12 divisors (see below), whose sum is σ = 2654904. Its totient is φ = 505680.

The previous prime is 1264213. The next prime is 1264231. The reversal of 1264220 is 224621.

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, 31586 + ... + 31625.

It is an arithmetic number, because the mean of its divisors is an integer number (221242).

2^1264220 is an apocalyptic number.

1264220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1264220 is an abundant number, since it is smaller than the sum of its proper divisors (1390684).

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

1264220 is a wasteful number, since it uses less digits than its factorization.

1264220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63220 (or 63218 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 1264220 is about 1124.3753821567. The cubic root of 1264220 is about 108.1286760754.

Adding to 1264220 its reverse (224621), we get a palindrome (1488841).

The spelling of 1264220 in words is "one million, two hundred sixty-four thousand, two hundred twenty".