4078026 has 28 divisors (see below), whose sum is σ = 9174642. Its totient is φ = 1358856.

The previous prime is 4078013. The next prime is 4078031. The reversal of 4078026 is 6208704.

It can be written as a sum of positive squares in only one way, i.e., 3080025 + 998001 = 1755^2 + 999^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

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 13 ways as a sum of consecutive naturals, for example, 60 + ... + 2856.

Almost surely, 2^4078026 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4078026, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4587321).

4078026 is an abundant number, since it is smaller than the sum of its proper divisors (5096616).

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

4078026 is an equidigital number, since it uses as much as digits as its factorization.

4078026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2817 (or 2802 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 4078026 is about 2019.4122907420. The cubic root of 4078026 is about 159.7656203730.

The spelling of 4078026 in words is "four million, seventy-eight thousand, twenty-six".