1220508 has 30 divisors (see below), whose sum is σ = 3191496. Its totient is φ = 406728.

The previous prime is 1220507. The next prime is 1220591. The reversal of 1220508 is 8050221.

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

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220507) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1560 + ... + 2207.

2^1220508 is an apocalyptic number.

1220508 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1220508 is an abundant number, since it is smaller than the sum of its proper divisors (1970988).

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

1220508 is a wasteful number, since it uses less digits than its factorization.

1220508 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3783 (or 3772 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 1220508 is about 1104.7660385801. The cubic root of 1220508 is about 106.8678019160.

Adding to 1220508 its reverse (8050221), we get a palindrome (9270729).

It can be divided in two parts, 1220 and 508, that added together give a cube (1728 = 12³).

The spelling of 1220508 in words is "one million, two hundred twenty thousand, five hundred eight".