20426378 has 8 divisors (see below), whose sum is σ = 35016672. Its totient is φ = 8754156.

The previous prime is 20426321. The next prime is 20426389. The reversal of 20426378 is 87362402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 729500 + ... + 729527.

It is an arithmetic number, because the mean of its divisors is an integer number (4377084).

Almost surely, 2^20426378 is an apocalyptic number.

20426378 is a deficient number, since it is larger than the sum of its proper divisors (14590294).

20426378 is a wasteful number, since it uses less digits than its factorization.

20426378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1459036.

The product of its (nonzero) digits is 16128, while the sum is 32.

The square root of 20426378 is about 4519.5550665967. Note that the first 3 decimals coincide. The cubic root of 20426378 is about 273.3571606567.

The spelling of 20426378 in words is "twenty million, four hundred twenty-six thousand, three hundred seventy-eight".