1223068572 has 144 divisors (see below), whose sum is σ = 3547794432. Its totient is φ = 365316480.

The previous prime is 1223068549. The next prime is 1223068601. The reversal of 1223068572 is 2758603221.

1223068572 is a `hidden beast` number, since 1 + 2 + 23 + 0 + 68 + 572 = 666.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 779733 + ... + 781299.

Almost surely, 2^1223068572 is an apocalyptic number.

1223068572 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1223068572, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1773897216).

1223068572 is an abundant number, since it is smaller than the sum of its proper divisors (2324725860).

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

1223068572 is a wasteful number, since it uses less digits than its factorization.

1223068572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1670 (or 1656 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 1223068572 is about 34972.3972870034. The cubic root of 1223068572 is about 1069.4248435982.

The spelling of 1223068572 in words is "one billion, two hundred twenty-three million, sixty-eight thousand, five hundred seventy-two".