20686152 has 32 divisors (see below), whose sum is σ = 51897600. Its totient is φ = 6871104.

The previous prime is 20686147. The next prime is 20686189. The reversal of 20686152 is 25168602.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6249 + ... + 8967.

It is an arithmetic number, because the mean of its divisors is an integer number (1621800).

Almost surely, 2^20686152 is an apocalyptic number.

It is an amenable number.

20686152 is an abundant number, since it is smaller than the sum of its proper divisors (31211448).

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

20686152 is a wasteful number, since it uses less digits than its factorization.

20686152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3045 (or 3041 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 20686152 is about 4548.2031616892. The cubic root of 20686152 is about 274.5110960641.

The spelling of 20686152 in words is "twenty million, six hundred eighty-six thousand, one hundred fifty-two".