20541378 has 64 divisors (see below), whose sum is σ = 48988800. Its totient is φ = 5660160.

The previous prime is 20541373. The next prime is 20541379. The reversal of 20541378 is 87314502.

It is not an unprimeable number, because it can be changed into a prime (20541371) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 76228 + ... + 76496.

It is an arithmetic number, because the mean of its divisors is an integer number (765450).

Almost surely, 2^20541378 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20541378, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24494400).

20541378 is an abundant number, since it is smaller than the sum of its proper divisors (28447422).

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

20541378 is a wasteful number, since it uses less digits than its factorization.

20541378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 387.

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

The square root of 20541378 is about 4532.2597012969. The cubic root of 20541378 is about 273.8691989393.

The spelling of 20541378 in words is "twenty million, five hundred forty-one thousand, three hundred seventy-eight".