1223672688 has 180 divisors, whose sum is σ = 4050430488. Its totient is φ = 343768320.

The previous prime is 1223672687. The next prime is 1223672693. The reversal of 1223672688 is 8862763221.

1223672688 is a `hidden beast` number, since 1 + 22 + 367 + 268 + 8 = 666.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223672687) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 428995 + ... + 431837.

Almost surely, 2^1223672688 is an apocalyptic number.

1223672688 is a gapful number since it is divisible by the number (18) 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 1223672688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2025215244).

1223672688 is an abundant number, since it is smaller than the sum of its proper divisors (2826757800).

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

1223672688 is a wasteful number, since it uses less digits than its factorization.

1223672688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2932 (or 2916 counting only the distinct ones).

The product of its digits is 387072, while the sum is 45.

The square root of 1223672688 is about 34981.0332608973. The cubic root of 1223672688 is about 1069.6008899602.

The spelling of 1223672688 in words is "one billion, two hundred twenty-three million, six hundred seventy-two thousand, six hundred eighty-eight".