20605088 has 72 divisors (see below), whose sum is σ = 50029812. Its totient is φ = 8300544.

The previous prime is 20605073. The next prime is 20605099. The reversal of 20605088 is 88050602.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 20322064 + 283024 = 4508^2 + 532^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20605088.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26270 + ... + 27042.

Almost surely, 2^20605088 is an apocalyptic number.

20605088 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20605088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25014906).

20605088 is an abundant number, since it is smaller than the sum of its proper divisors (29424724).

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

20605088 is a wasteful number, since it uses less digits than its factorization.

20605088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 814 (or 799 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 29.

The square root of 20605088 is about 4539.2827627281. The cubic root of 20605088 is about 274.1520458980.

The spelling of 20605088 in words is "twenty million, six hundred five thousand, eighty-eight".