121623768 has 80 divisors (see below), whose sum is σ = 389339280. Its totient is φ = 34748352.

The previous prime is 121623713. The next prime is 121623791. The reversal of 121623768 is 867326121.

121623768 is a `hidden beast` number, since 1 + 21 + 623 + 7 + 6 + 8 = 666.

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

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

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 19 ways as a sum of consecutive naturals, for example, 8871 + ... + 17942.

It is an arithmetic number, because the mean of its divisors is an integer number (4866741).

Almost surely, 2^121623768 is an apocalyptic number.

121623768 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

121623768 is an abundant number, since it is smaller than the sum of its proper divisors (267715512).

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

121623768 is a wasteful number, since it uses less digits than its factorization.

121623768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26838 (or 26825 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The square root of 121623768 is about 11028.3166439852. The cubic root of 121623768 is about 495.4572084219.

Adding to 121623768 its reverse (867326121), we get a palindrome (988949889).

The spelling of 121623768 in words is "one hundred twenty-one million, six hundred twenty-three thousand, seven hundred sixty-eight".