20078526 has 32 divisors (see below), whose sum is σ = 43989120. Its totient is φ = 6071904.

The previous prime is 20078521. The next prime is 20078533. The reversal of 20078526 is 62587002.

It is a junction number, because it is equal to n+sod(n) for n = 20078493 and 20078502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20078521) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2421 + ... + 6783.

It is an arithmetic number, because the mean of its divisors is an integer number (1374660).

Almost surely, 2^20078526 is an apocalyptic number.

20078526 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 20078526, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21994560).

20078526 is an abundant number, since it is smaller than the sum of its proper divisors (23910594).

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

20078526 is a wasteful number, since it uses less digits than its factorization.

20078526 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4440.

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 20078526 is about 4480.9068278642. The cubic root of 20078526 is about 271.7965516561.

The spelling of 20078526 in words is "twenty million, seventy-eight thousand, five hundred twenty-six".