20695488 has 112 divisors (see below), whose sum is σ = 61447680. Its totient is φ = 6092800.

The previous prime is 20695483. The next prime is 20695517. The reversal of 20695488 is 88459602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20695483) 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, 86473 + ... + 86711.

It is an arithmetic number, because the mean of its divisors is an integer number (548640).

Almost surely, 2^20695488 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20695488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30723840).

20695488 is an abundant number, since it is smaller than the sum of its proper divisors (40752192).

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

20695488 is a wasteful number, since it uses less digits than its factorization.

20695488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306 (or 296 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 42.

The square root of 20695488 is about 4549.2293852915. The cubic root of 20695488 is about 274.5523869744.

It can be divided in two parts, 2069 and 5488, that added together give a palindrome (7557).

The spelling of 20695488 in words is "twenty million, six hundred ninety-five thousand, four hundred eighty-eight".