68428650 has 48 divisors (see below), whose sum is σ = 171489024. Its totient is φ = 18055680.

The previous prime is 68428643. The next prime is 68428691. The reversal of 68428650 is 5682486.

It is a junction number, because it is equal to n+sod(n) for n = 68428599 and 68428608.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12199 + ... + 16901.

It is an arithmetic number, because the mean of its divisors is an integer number (3572688).

Almost surely, 2^68428650 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68428650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85744512).

68428650 is an abundant number, since it is smaller than the sum of its proper divisors (103060374).

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

68428650 is a wasteful number, since it uses less digits than its factorization.

68428650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4815 (or 4810 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 39.

The square root of 68428650 is about 8272.1611444652. The cubic root of 68428650 is about 409.0213621393.

The spelling of 68428650 in words is "sixty-eight million, four hundred twenty-eight thousand, six hundred fifty".