68728023 has 48 divisors (see below), whose sum is σ = 126171136. Its totient is φ = 35069760.

The previous prime is 68728021. The next prime is 68728027. The reversal of 68728023 is 32082786.

It is a happy number.

It is not a de Polignac number, because 68728023 - 2¹ = 68728021 is a prime.

It is a super-2 number, since 2×68728023² = 9447082290977058, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68728021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 24036 + ... + 26742.

Almost surely, 2^68728023 is an apocalyptic number.

68728023 is a gapful number since it is divisible by the number (63) formed by its first and last digit.

68728023 is a deficient number, since it is larger than the sum of its proper divisors (57443113).

68728023 is a wasteful number, since it uses less digits than its factorization.

68728023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2764 (or 2761 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 68728023 is about 8290.2366069974. The cubic root of 68728023 is about 409.6169791971.

The spelling of 68728023 in words is "sixty-eight million, seven hundred twenty-eight thousand, twenty-three".