20786148 has 36 divisors (see below), whose sum is σ = 52835328. Its totient is φ = 6890160.

The previous prime is 20786137. The next prime is 20786149. The reversal of 20786148 is 84168702.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (20786149) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5365 + ... + 8387.

It is an arithmetic number, because the mean of its divisors is an integer number (1467648).

Almost surely, 2^20786148 is an apocalyptic number.

It is an amenable number.

20786148 is an abundant number, since it is smaller than the sum of its proper divisors (32049180).

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

20786148 is a wasteful number, since it uses less digits than its factorization.

20786148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3224 (or 3219 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 36.

The square root of 20786148 is about 4559.1828215153. The cubic root of 20786148 is about 274.9527103257.

The spelling of 20786148 in words is "twenty million, seven hundred eighty-six thousand, one hundred forty-eight".