20892378 has 32 divisors (see below), whose sum is σ = 45747072. Its totient is φ = 6321600.

The previous prime is 20892359. The next prime is 20892379. The reversal of 20892378 is 87329802.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (20892379) 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, 2563 + ... + 6953.

It is an arithmetic number, because the mean of its divisors is an integer number (1429596).

Almost surely, 2^20892378 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20892378, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22873536).

20892378 is an abundant number, since it is smaller than the sum of its proper divisors (24854694).

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

20892378 is a wasteful number, since it uses less digits than its factorization.

20892378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4470.

The product of its (nonzero) digits is 48384, while the sum is 39.

The square root of 20892378 is about 4570.8180887014. The cubic root of 20892378 is about 275.4203071419.

The spelling of 20892378 in words is "twenty million, eight hundred ninety-two thousand, three hundred seventy-eight".