1220267450 has 12 divisors (see below), whose sum is σ = 2269697550. Its totient is φ = 488106960.

The previous prime is 1220267443. The next prime is 1220267467. The reversal of 1220267450 is 547620221.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 556535281 + 663732169 = 23591^2 + 25763^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12202625 + ... + 12202724.

Almost surely, 2^1220267450 is an apocalyptic number.

1220267450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1220267450 is a deficient number, since it is larger than the sum of its proper divisors (1049430100).

1220267450 is a wasteful number, since it uses less digits than its factorization.

1220267450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24405361 (or 24405356 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 1220267450 is about 34932.3267189576. The cubic root of 1220267450 is about 1068.6078059401.

Adding to 1220267450 its reverse (547620221), we get a palindrome (1767887671).

The spelling of 1220267450 in words is "one billion, two hundred twenty million, two hundred sixty-seven thousand, four hundred fifty".