20460878 has 8 divisors (see below), whose sum is σ = 31111968. Its totient is φ = 10090224.

The previous prime is 20460871. The next prime is 20460887. The reversal of 20460878 is 87806402.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20460871) 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, 69926 + ... + 70217.

It is an arithmetic number, because the mean of its divisors is an integer number (3888996).

Almost surely, 2^20460878 is an apocalyptic number.

20460878 is a deficient number, since it is larger than the sum of its proper divisors (10651090).

20460878 is a wasteful number, since it uses less digits than its factorization.

20460878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140218.

The product of its (nonzero) digits is 21504, while the sum is 35.

The square root of 20460878 is about 4523.3702037308. The cubic root of 20460878 is about 273.5109734943.

The spelling of 20460878 in words is "twenty million, four hundred sixty thousand, eight hundred seventy-eight".