1223240670 has 64 divisors (see below), whose sum is σ = 3268823040. Its totient is φ = 325512864.

The previous prime is 1223240597. The next prime is 1223240723. The reversal of 1223240670 is 760423221.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 131307 + ... + 140313.

It is an arithmetic number, because the mean of its divisors is an integer number (51075360).

Almost surely, 2^1223240670 is an apocalyptic number.

1223240670 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1223240670, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1634411520).

1223240670 is an abundant number, since it is smaller than the sum of its proper divisors (2045582370).

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

1223240670 is a wasteful number, since it uses less digits than its factorization.

1223240670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9526 (or 9520 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 1223240670 is about 34974.8576837705. The cubic root of 1223240670 is about 1069.4750008418.

Adding to 1223240670 its reverse (760423221), we get a palindrome (1983663891).

The spelling of 1223240670 in words is "one billion, two hundred twenty-three million, two hundred forty thousand, six hundred seventy".