20378774 has 8 divisors (see below), whose sum is σ = 32919600. Its totient is φ = 9405576.

The previous prime is 20378747. The next prime is 20378779. The reversal of 20378774 is 47787302.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20378779) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 391874 + ... + 391925.

It is an arithmetic number, because the mean of its divisors is an integer number (4114950).

Almost surely, 2^20378774 is an apocalyptic number.

20378774 is a deficient number, since it is larger than the sum of its proper divisors (12540826).

20378774 is a wasteful number, since it uses less digits than its factorization.

20378774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 783814.

The product of its (nonzero) digits is 65856, while the sum is 38.

The square root of 20378774 is about 4514.2855470163. The cubic root of 20378774 is about 273.1446410688.

The spelling of 20378774 in words is "twenty million, three hundred seventy-eight thousand, seven hundred seventy-four".