20605378 has 8 divisors (see below), whose sum is σ = 32251968. Its totient is φ = 9854724.

The previous prime is 20605349. The next prime is 20605391. The reversal of 20605378 is 87350602.

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, 223926 + ... + 224017.

It is an arithmetic number, because the mean of its divisors is an integer number (4031496).

Almost surely, 2^20605378 is an apocalyptic number.

20605378 is a deficient number, since it is larger than the sum of its proper divisors (11646590).

20605378 is a wasteful number, since it uses less digits than its factorization.

20605378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 447968.

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 20605378 is about 4539.3147059881. The cubic root of 20605378 is about 274.1533320483.

The spelling of 20605378 in words is "twenty million, six hundred five thousand, three hundred seventy-eight".