20488215 has 16 divisors (see below), whose sum is σ = 35761536. Its totient is φ = 9933600.

The previous prime is 20488201. The next prime is 20488219. The reversal of 20488215 is 51288402.

It is not a de Polignac number, because 20488215 - 2⁴ = 20488199 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20488219) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61921 + ... + 62250.

It is an arithmetic number, because the mean of its divisors is an integer number (2235096).

Almost surely, 2^20488215 is an apocalyptic number.

20488215 is a deficient number, since it is larger than the sum of its proper divisors (15273321).

20488215 is a wasteful number, since it uses less digits than its factorization.

20488215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124190.

The product of its (nonzero) digits is 5120, while the sum is 30.

The square root of 20488215 is about 4526.3909464385. The cubic root of 20488215 is about 273.6327284854.

The spelling of 20488215 in words is "twenty million, four hundred eighty-eight thousand, two hundred fifteen".