68020434 has 24 divisors (see below), whose sum is σ = 156047580. Its totient is φ = 21339648.

The previous prime is 68020423. The next prime is 68020439. The reversal of 68020434 is 43402086.

It can be written as a sum of positive squares in 2 ways, for example, as 67815225 + 205209 = 8235^2 + 453^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 68020398 and 68020407.

It is not an unprimeable number, because it can be changed into a prime (68020439) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 110839 + ... + 111450.

Almost surely, 2^68020434 is an apocalyptic number.

68020434 is an abundant number, since it is smaller than the sum of its proper divisors (88027146).

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

68020434 is a wasteful number, since it uses less digits than its factorization.

68020434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222314 (or 222311 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The square root of 68020434 is about 8247.4501514104. The cubic root of 68020434 is about 408.2063906758.

The spelling of 68020434 in words is "sixty-eight million, twenty thousand, four hundred thirty-four".