20695552 has 40 divisors (see below), whose sum is σ = 41934816. Its totient is φ = 10202112.

The previous prime is 20695537. The next prime is 20695553. The reversal of 20695552 is 25559602.

It is not an unprimeable number, because it can be changed into a prime (20695553) 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, 42253 + ... + 42739.

Almost surely, 2^20695552 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 20695552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20967408).

20695552 is an abundant number, since it is smaller than the sum of its proper divisors (21239264).

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

20695552 is an frugal number, since it uses more digits than its factorization.

20695552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 588 (or 572 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 34.

The square root of 20695552 is about 4549.2364194445. The cubic root of 20695552 is about 274.5526699883.

The spelling of 20695552 in words is "twenty million, six hundred ninety-five thousand, five hundred fifty-two".