68054140 has 144 divisors (see below), whose sum is σ = 186157440. Its totient is φ = 20657280.

The previous prime is 68054131. The next prime is 68054153. The reversal of 68054140 is 4145086.

It is a super-2 number, since 2×68054140² = 9262731942279200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 68054099 and 68054108.

It is a congruent number.

It is an unprimeable number.

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, 635967 + ... + 636073.

It is an arithmetic number, because the mean of its divisors is an integer number (1292760).

Almost surely, 2^68054140 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68054140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93078720).

68054140 is an abundant number, since it is smaller than the sum of its proper divisors (118103300).

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

68054140 is a wasteful number, since it uses less digits than its factorization.

68054140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200 (or 191 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 68054140 is about 8249.4933177741. The cubic root of 68054140 is about 408.2738053812.

The spelling of 68054140 in words is "sixty-eight million, fifty-four thousand, one hundred forty".