20484378 has 24 divisors (see below), whose sum is σ = 44467488. Its totient is φ = 6815112.

The previous prime is 20484319. The next prime is 20484391. The reversal of 20484378 is 87348402.

20484378 is a `hidden beast` number, since 204 + 84 + 378 = 666.

It is a super-3 number, since 3×20484378³ (a number of 23 digits) contains 333 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15325 + ... + 16607.

It is an arithmetic number, because the mean of its divisors is an integer number (1852812).

Almost surely, 2^20484378 is an apocalyptic number.

20484378 is an abundant number, since it is smaller than the sum of its proper divisors (23983110).

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

20484378 is a wasteful number, since it uses less digits than its factorization.

20484378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2178 (or 2175 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 36.

The square root of 20484378 is about 4525.9670789788. The cubic root of 20484378 is about 273.6156455863.

The spelling of 20484378 in words is "twenty million, four hundred eighty-four thousand, three hundred seventy-eight".